最多两年@原创军团
<if＜x＞rame></p><p><strong><span style="color:#e53333;font-size:18px">如下（题目就是这么出的，大家看清楚 哦</span><span style="color:#e53333;font-size:18px">）</span><span style="color:#e53333;font-size:18px"> </span></strong> </p><p><img border="0" src="http://fs.gongkong.com/uploadpic/forum/201209/2012091723561900001.jpg" /></p><p> </p><p><iframe style="border-bottom:#222222 0px solid;border-left:#222222 0px solid;border-top:#222222 0px solid;border-right:#222222 0px solid" height="0" marginheight="0" src="http://www.gongkong.com/Common/ADHit.aspx?Id=2011122910013100001&companyId=5-B13D-514DC1B9F824&url=http%3a%2f%2fwww.industry.siemens.com.cn%2fhome%2fcn%2fzh%2fnews-events-exhibitions%2fevents%2fsmart%2fPages%2fSOLUTION.aspx" frameborder="0" width="0" marginwidth="0" scrolling="no"><if＜x＞rame></p> <!--begin打赏--> <!--end打赏--> </div> <!--begin Client--> <div class="clienttypeclass"> </div> <!--end Client--> </div> <div class="topic-bt" style="border:1px solid #ccd3e4;"> <span style="float:left;">分享到：</span> <div class="social-share" data-initialized="true"> <a href="javascript:void(0)" class="social-share-icon icon-wechat" data-type="web" id="wechat"></a> <a href="javascript:void(0)" class="social-share-icon icon-weibo" data-type="web" id="weibo"></a> <a href="javascript:void(0)" class="social-share-icon icon-qq" data-type="web" id="qq"></a> <a href="javascript:void(0)" class="social-share-icon icon-qzone" data-type="web" id="qzone"></a> </div> <div class="handel-con"> <span id="t_ISOPITMIZATION"> </span> <span> <input type="hidden" id="collectionValue" value="" /> <img src="//pic.gongkong.com/UploadPic/UploadPic/Forum/shoucang0407.png" style="width:23px;" /> <a href="javascript:void(0);" id="collection"><sapn id="_collection">收藏</sapn></a> </span> <span> <img src="//pic.gongkong.com/UploadPic/UploadPic/Forum/yaoqing0407.png" style="width:23px;" /> <a href="javascript:;" class="yq_a">邀请回答</a> </span> <span> <img src="//pic.gongkong.com/UploadPic/UploadPic/Forum/huifu0407.png" style="width:23px;" /> <a href="#replyDiv">回复楼主</a> </span> <span> <img src="//pic.gongkong.com/UploadPic/UploadPic/Forum/jubao0407.png" style="width:23px;" /> <a href="#" class="report" id="masterReport">举报</a> </span> <span> <img src="//pic.gongkong.com/UploadPic/UploadPic/Forum/guanli0529.png" style="width:23px;display:none" id="master_pic" /> <a href="javascript:;" id="master" data-uid="137572"></a> </span> </div> </div> </div> </div> <!--==楼主最近还看过==--> <!--==通栏广告==--> <style type="text/css"> .jialei { width: 100%; } .jialei ul { text-align: left; padding: 0px; } .jialei ul li { line-height: 22px; list-style-type: none; } .jialei ul li a { color: #333333; } .a_img_all { display: none; width: 100%; height: 135px; position: relative; overflow: hidden; } .a_img_all img { display: block; max-width: 100%; height: auto; position: absolute; top: 0; left: 0; right: 0; bottom: 0; margin: auto; } </style> <div id="recommendpage"></div> <!--==回复列表==--> <div id="replyList"> <!--BEGIN_TOPIC_2706403--> <div id="_reply_1"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2981922" uname="原创军团--恒温区奋斗"> <div class="topic-left"> <p class="avtor-con"> <img src="http://www.gongkong.com/Images/defaultface.gif" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2981922" rel="noopener noreferrer" target="_blank">原创军团--恒温区奋斗</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：2帖</li> <li>帖子：30帖 | 993回</li> <li>年度积分：0</li> <li>历史总积分：3328</li> <li>注册：2012年8月29日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 00:53:24 </div> <div id="li0" class="layerInfo rrow">1楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 经过核算，C是对的，保留悬念，详细过程后续补充，但是你们也别相信我的是正确答案，你们说对吗？ </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2981922" data-id="2706403"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706403--><!--BEGIN_TOPIC_2706413--> <div id="_reply_2"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="8851" uname="zwm00306"> <div class="topic-left"> <p class="avtor-con"> <img src="http://nfs.gongkong.com/Upload/HeadPhoto/202105/20210524181416912_min.jpg" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=8851" rel="noopener noreferrer" target="_blank">zwm00306</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：0帖</li> <li>帖子：16帖 | 1541回</li> <li>年度积分：0</li> <li>历史总积分：5963</li> <li>注册：2001年10月22日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 06:23:36 </div> <div id="li0" class="layerInfo rrow">2楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 这个倒是不难啊。。。。。。 </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="8851" data-id="2706413"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706413--><!--BEGIN_TOPIC_2706437--> <div id="_reply_3"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2812594" uname="ahukuaipao"> <div class="topic-left"> <p class="avtor-con"> <img src="http://www.gongkong.com/Images/defaultface.gif" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2812594" rel="noopener noreferrer" target="_blank">ahukuaipao</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：0帖</li> <li>帖子：0帖 | 2745回</li> <li>年度积分：0</li> <li>历史总积分：7439</li> <li>注册：2011年12月12日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 08:07:23 </div> <div id="li0" class="layerInfo rrow">3楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 用排除法加代入法，选C。。。 </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2812594" data-id="2706437"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706437--><!--BEGIN_TOPIC_2706461--> <div id="_reply_4"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2965242" uname="wolaigequ"> <div class="topic-left"> <p class="avtor-con"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/defaultface.gif" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2965242" rel="noopener noreferrer" target="_blank">wolaigequ</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：0帖</li> <li>帖子：1帖 | 135回</li> <li>年度积分：0</li> <li>历史总积分：422</li> <li>注册：2012年7月30日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 08:43:42 </div> <div id="li0" class="layerInfo rrow">4楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> <p>这好像是要用积分来算。。。。求过程</p> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2965242" data-id="2706461"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706461--><!--BEGIN_TOPIC_2706470--> <div id="_reply_5"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="836503" uname="中国555"> <div class="topic-left"> <p class="avtor-con"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/defaultface.gif" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=836503" rel="noopener noreferrer" target="_blank">中国555</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：0帖</li> <li>帖子：3帖 | 861回</li> <li>年度积分：0</li> <li>历史总积分：7826</li> <li>注册：2009年3月08日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 08:46:16 </div> <div id="li0" class="layerInfo rrow">5楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 引用 ahukuaipao 的回复内容：用排除法加代入法，选C。。。 <br /><hr /><br /><br />这个方法好。 </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="836503" data-id="2706470"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706470--><!--BEGIN_TOPIC_2706490--> <div id="_reply_6"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2971647" uname="Like_MCU"> <div class="topic-left"> <p class="avtor-con"> <img src="http://nfs.gongkong.com/Upload/HeadPhoto/201410/20141003103722125_min.jpg" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2971647" rel="noopener noreferrer" target="_blank">Like_MCU</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：1帖</li> <li>帖子：4帖 | 494回</li> <li>年度积分：0</li> <li>历史总积分：1666</li> <li>注册：2012年8月11日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 08:56:56 </div> <div id="li0" class="layerInfo rrow">6楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 我选C，求导计算出极值点位置再分段考虑。 </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2971647" data-id="2706490"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706490--><!--BEGIN_TOPIC_2706502--> <div id="_reply_7"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="669045" uname="miy_gongkong"> <div class="topic-left"> <p class="avtor-con"> <img src="http://nfs.gongkong.com/Upload/HeadPhoto/202007/20200711182940109.jpg" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=669045" rel="noopener noreferrer" target="_blank">miy_gongkong</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：2帖</li> <li>帖子：23帖 | 3065回</li> <li>年度积分：0</li> <li>历史总积分：12421</li> <li>注册：2008年9月18日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 09:09:31 </div> <div id="li0" class="layerInfo rrow">7楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> <p>我怎么感觉是 A 啊， 这儿算法是不是理解 为 吧 3 秒带入 变量t 里面</p><p> </p><p>3^3 - 12*3 +2= -7 （负数表示 负方向吧）； 所以答案等于 A ;</p><p> </p><p> </p> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="669045" data-id="2706502"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706502--><!--BEGIN_TOPIC_2706504--> <div id="_reply_8"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2992969" uname="wangfulei"> <div class="topic-left"> <p class="avtor-con"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/defaultface.gif" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2992969" rel="noopener noreferrer" target="_blank">wangfulei</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：0帖</li> <li>帖子：0帖 | 103回</li> <li>年度积分：0</li> <li>历史总积分：76</li> <li>注册：2012年9月18日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 09:12:35 </div> <div id="li0" class="layerInfo rrow">8楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 首先求出s的拐点在t=2，然后分两段相加即可<br /> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2992969" data-id="2706504"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706504--><!--BEGIN_TOPIC_2706505--> <div id="_reply_9"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="669045" uname="miy_gongkong"> <div class="topic-left"> <p class="avtor-con"> <img src="http://nfs.gongkong.com/Upload/HeadPhoto/202007/20200711182940109.jpg" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=669045" rel="noopener noreferrer" target="_blank">miy_gongkong</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：2帖</li> <li>帖子：23帖 | 3065回</li> <li>年度积分：0</li> <li>历史总积分：12421</li> <li>注册：2008年9月18日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 09:13:41 </div> <div id="li0" class="layerInfo rrow">9楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> <p>我对这个题不了解的是， 这个电气工程 有仕么关系？</p><p> </p> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="669045" data-id="2706505"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706505--><!--BEGIN_TOPIC_2706507--> <div id="_reply_10"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2812594" uname="ahukuaipao"> <div class="topic-left"> <p class="avtor-con"> <img src="http://www.gongkong.com/Images/defaultface.gif" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2812594" rel="noopener noreferrer" target="_blank">ahukuaipao</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：0帖</li> <li>帖子：0帖 | 2745回</li> <li>年度积分：0</li> <li>历史总积分：7439</li> <li>注册：2011年12月12日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 09:14:13 </div> <div id="li0" class="layerInfo rrow">10楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 引用 miy_gongkong 的回复内容： 我怎么感觉是 A 啊， 这儿算法是不是理解 为 吧 3 秒带入 变量t 里面 3^3 - 12*3 +2= -7 （负数表示 负方向吧）； 所以答案等于 A ; <br /><hr /><br />想的太简单，你算的这是位移，不是路程。。。 </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2812594" data-id="2706507"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706507--><!--BEGIN_TOPIC_2706543--> <div id="_reply_11"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="369081" uname="jiaoanpeng——王者之师"> <div class="topic-left"> <p class="avtor-con"> <img src="http://fs.gongkong.com/uploadpic/userface/201202/2012022908203200001_90x90.jpg" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=369081" rel="noopener noreferrer" target="_blank">jiaoanpeng——王者之师</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：28帖</li> <li>求助：1帖</li> <li>帖子：327帖 | 15621回</li> <li>年度积分：0</li> <li>历史总积分：78592</li> <li>注册：2006年7月25日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 09:45:22 </div> <div id="li0" class="layerInfo rrow">11楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> <p align="left">嘻嘻，其实一秒一秒的算也不难，也用不了多少时间。</p> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="369081" data-id="2706543"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706543--><!--BEGIN_TOPIC_2706979--> <div id="_reply_12"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2971692" uname="芽菜@技术豆"> <div class="topic-left"> <p class="avtor-con"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/defaultface.gif" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2971692" rel="noopener noreferrer" target="_blank">芽菜@技术豆</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：2帖</li> <li>帖子：20帖 | 326回</li> <li>年度积分：0</li> <li>历史总积分：0</li> <li>注册：1900年1月01日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 16:12:52 </div> <div id="li0" class="layerInfo rrow">12楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 选C 初始位置2 一秒后到-9 再到-14 再到-7 画个数轴就知道 2到-14路程为16 再往回走到-7 距离为7 16+7=23<img alt="" src="http://bbs.gongkong.com/Kindeditor/plugins/emoticons/0.gif" border="0" />如果我对了 请回复<img alt="" src="http://bbs.gongkong.com/Kindeditor/plugins/emoticons/29.gif" border="0" /> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2971692" data-id="2706979"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706979--><!--BEGIN_TOPIC_2706981--> <div id="_reply_13"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2981922" uname="原创军团--恒温区奋斗"> <div class="topic-left"> <p class="avtor-con"> <img src="http://www.gongkong.com/Images/defaultface.gif" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2981922" rel="noopener noreferrer" target="_blank">原创军团--恒温区奋斗</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：2帖</li> <li>帖子：30帖 | 993回</li> <li>年度积分：0</li> <li>历史总积分：3328</li> <li>注册：2012年8月29日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 16:15:12 </div> <div id="li0" class="layerInfo rrow">13楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 引用 芽菜@技术豆 的回复内容：选C 初始位置2 一秒后到-9 再到-14 再到-7 画个数轴就知道 2到-14路程为16 再往回走到-7 距离为7 16+7=23如果我对了 请回复 <br /><hr /><br />这个就是我说的过程，嘿嘿 </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2981922" data-id="2706981"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706981--><!--BEGIN_TOPIC_2706984--> <div id="_reply_14"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="669045" uname="miy_gongkong"> <div class="topic-left"> <p class="avtor-con"> <img src="http://nfs.gongkong.com/Upload/HeadPhoto/202007/20200711182940109.jpg" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=669045" rel="noopener noreferrer" target="_blank">miy_gongkong</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：2帖</li> <li>帖子：23帖 | 3065回</li> <li>年度积分：0</li> <li>历史总积分：12421</li> <li>注册：2008年9月18日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 16:17:54 </div> <div id="li0" class="layerInfo rrow">14楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 引用 miy_gongkong 的回复内容：我对这个题不了解的是， 这和 电气工程 有仕么关系？ <br /><hr /><br /><br /> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="669045" data-id="2706984"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2706984--><!--BEGIN_TOPIC_2707014--> <div id="_reply_15"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2971692" uname="芽菜@技术豆"> <div class="topic-left"> <p class="avtor-con"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/defaultface.gif" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2971692" rel="noopener noreferrer" target="_blank">芽菜@技术豆</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：2帖</li> <li>帖子：20帖 | 326回</li> <li>年度积分：0</li> <li>历史总积分：0</li> <li>注册：1900年1月01日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 16:39:55 </div> <div id="li0" class="layerInfo rrow">15楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 回复内容：<br />对：芽菜@技术豆关于<span style="color:green;">选C 初始位置2 一秒后到-9 再到-14 再到-7 画个数轴就知道 2到-14路程为16 再往回走到-7 距离为7 16+7=23如果我对了 请回复 </span>内容的回复：<br /><hr /><br />我擦 原来你直接就给出答案了....那还不给我最佳回复 等啥呢<img alt="" src="http://bbs.gongkong.com/Kindeditor/plugins/emoticons/16.gif" border="0" /> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2971692" data-id="2707014"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2707014--><!--BEGIN_TOPIC_2707196--> <div id="_reply_16"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="88243" uname="至善若水"> <div class="topic-left"> <p class="avtor-con"> <img src="http://nfs.gongkong.com/Upload/HeadPhoto/201403/20140312210056734_min.JPG" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=88243" rel="noopener noreferrer" target="_blank">至善若水</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：1帖</li> <li>求助：0帖</li> <li>帖子：27帖 | 2161回</li> <li>年度积分：0</li> <li>历史总积分：8492</li> <li>注册：2003年7月22日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 20:34:16 </div> <div id="li0" class="layerInfo rrow">16楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> <p>1、ds= (3*t^2-12)dt</p><p>2、令 ds=0，求得t=2，因为是求路程，这是标量，所以｜ds｜积分，而不是对ds积分。</p><p>3、当0<=t<=2时|ds|=(12-3*t^2)dt，当2<=t<=3时，|ds|= (3*t^2-12)dt</p><p>4、有微积分基础的可以立即求出这个积分为23，即答案C正确。很抱歉我不会在论坛表示微积分公式.</p><p><a href="http://home.gongkong.com/profile/default.aspx?uid">http://home.gongkong.com/profile/default.aspx?uid</a>=芽菜@技术豆的结果是对的，但是我还真没有想明白为什么会是对的。</p> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="88243" data-id="2707196"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2707196--><!--BEGIN_TOPIC_2707218--> <div id="_reply_17"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="88243" uname="至善若水"> <div class="topic-left"> <p class="avtor-con"> <img src="http://nfs.gongkong.com/Upload/HeadPhoto/201403/20140312210056734_min.JPG" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=88243" rel="noopener noreferrer" target="_blank">至善若水</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：1帖</li> <li>求助：0帖</li> <li>帖子：27帖 | 2161回</li> <li>年度积分：0</li> <li>历史总积分：8492</li> <li>注册：2003年7月22日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 20:41:40 </div> <div id="li0" class="layerInfo rrow">17楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 回复内容：<br />对：miy_gongkong关于<span style="color:green;">我对这个题不了解的是， 这个电气工程 有仕么关系？ </span>内容的回复：<br /><hr />作为一个电气工程师，需要有一定的物理和数学基础的，否则对一些现象很难做出准确的判断，并解决问题！<br /> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="88243" data-id="2707218"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2707218--><!--BEGIN_TOPIC_2707335--> <div id="_reply_18"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="2776824" uname="纵横军团-黑丫头"> <div class="topic-left"> <p class="avtor-con"> <img src="http://fs.gongkong.com/uploadpic/userface/201209/2012092201455000001_90x90.jpg" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=2776824" rel="noopener noreferrer" target="_blank">纵横军团-黑丫头</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：6帖</li> <li>帖子：47帖 | 1885回</li> <li>年度积分：0</li> <li>历史总积分：8955</li> <li>注册：2011年10月27日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 22:22:16 </div> <div id="li0" class="layerInfo rrow">18楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> <p>s=t^3的形式这个只是数学方程</p><p>s=t^2才具备运动方程方程特征</p><p> </p><p> </p> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="2776824" data-id="2707335"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2707335--><!--BEGIN_TOPIC_2707341--> <div id="_reply_19"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="669045" uname="miy_gongkong"> <div class="topic-left"> <p class="avtor-con"> <img src="http://nfs.gongkong.com/Upload/HeadPhoto/202007/20200711182940109.jpg" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=669045" rel="noopener noreferrer" target="_blank">miy_gongkong</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li>精华：0帖</li> <li>求助：2帖</li> <li>帖子：23帖 | 3065回</li> <li>年度积分：0</li> <li>历史总积分：12421</li> <li>注册：2008年9月18日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 22:25:32 </div> <div id="li0" class="layerInfo rrow">19楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> <p>引用 至善若水 的回复内容：回复内容：对：miy_gongkong关于我对这个题不了解的是， 这个电气工程 有仕么关系？ 内容的回复：作为一个电气工程师，需要有一定的物理和数学基础的，否则对一些现象很难做出准确的判断，并解决问题！<br /></p><p><hr /></p><p><br /> 据我了解，物理基础主要是电磁学方面， 那么数学方面的 你能举一些经典的例子吗？例如一些经典的数学模型，怎么应用在实际的 工艺中解决问题的？？ 大家一起学学基础吧！</p><p><br /> </p> </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="669045" data-id="2707341"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2707341--><!--BEGIN_TOPIC_2707412--> <div id="_reply_20"> <div class="topic" style="background-color:#f2f5f8;margin-top:5px;" uid="341019" uname="余 辉"> <div class="topic-left"> <p class="avtor-con"> <img src="http://nfs.gongkong.com/Upload/HeadPhoto/201506/20150618155651007_min.jpg" class="avtor" alt="" /> <!--<span class="numicon">02</span>--> </p> <p class="use-name"> <a href="http://home.gongkong.com/home/index?id=341019" rel="noopener noreferrer" target="_blank">余 辉</a> </p> <div class="layui-btn-group gz-btn" style="height:30px;"> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs guanzhu" isfollow="False">关注</button> <button type="button" class="layui-btn layui-btn-primary layui-btn-xs send_msg">私信</button> </div> <style type="text/css"> #_ReplyUserLeftList li { margin-bottom: 5px; } </style> <ul style="padding:0px 0px 0px 18px;" id="_ReplyUserLeftList"> <li style="color:red; margin-top: -5px;" >[版主]</li> <li>精华：53帖</li> <li>求助：44帖</li> <li>帖子：3350帖 | 28451回</li> <li>年度积分：603</li> <li>历史总积分：131640</li> <li>注册：2006年4月25日</li> </ul> </div> <div class="topic-right" style="background-color:#fff;"> <div class="baseInfo" style="padding:0px 4px;line-height:28px;"> <div class="bInfo" style="padding:0px 10px;color:#3b5998;font-size:12px;"> 发表于：2012-09-18 23:04:55 </div> <div id="li0" class="layerInfo rrow">20楼</div> </div> <div class="secdet-con ctxt" id="replyContent"> 求解题全过程 高人必定能给大家一个满意的解题过程 </div> <div class="secpic-cov"> <div class="sec-handel"> <span class="m_l8 grey" id="r_ISOPITMIZATION"> </span> <span class="rel" id="replyfloor"> <a href="#replyDiv">回复</a> </span> <span class="ref" id="reference"> <a href="#replyDiv">引用</a> </span> <span> <a href="#" class="report" id="replyReport">举报</a> </span> <span class="mreply" style="color:#3b5998;" data-uid="341019" data-id="2707412"> <a href="#" id="mreply_a"></a> </span> </div> </div> <div class="topic-bt secpic-bt" style="border:1px solid #ccd3e4;" id="reply_RandomTopic"> <!--<a href="javasctipt:void(0);" title="" target="_blank"></a>--> </div> </div> </div> <!--<a name="_replyListDiv" id="_replyListDiv"> </a>--> </div> <!--END_TOPIC_2707412--> </div> </div> <!--==右侧列表数据==--> <div class="det-right" id="detailsrighttop"> </div> <div class="det-right"> <div style="font-size:18px;height:25px;color:#2a84c3;font-weight:700;margin-bottom:5px;">热门招聘</div> <ul class="right-list" style="border-top:1px solid #ccd3e4;" id="HrPosition"> <!--<li><a href="http://www.gongkong.com/hr/Position/Details?id=31252" title="营销总监" target="_blank">营销总监</a><span class="sec-rp">面议</span></li><li><a href="http://www.gongkong.com/hr/Position/Details?id=31261" title="市场部实习生" target="_blank">市场部实习生</a><span class="sec-rp">面议</span></li><li><a href="http://www.gongkong.com/hr/Position/Details?id=31259" title="自控工程师" target="_blank">自控工程师</a><span class="sec-rp">10001以上</span></li><li><a href="http://www.gongkong.com/hr/Position/Details?id=31248" title="销售工程师" target="_blank">销售工程师</a><span class="sec-rp">6000以上</span></li><li><a href="http://www.gongkong.com/hr/Position/Details?id=31250" title="应用工程师" target="_blank">应用工程师</a><span class="sec-rp">10001以上</span></li>--> </ul> </div> <div class="det-right"> <div style="font-size:18px;height:25px;color:#2a84c3;font-weight:700;margin-bottom:5px;">相关主题</div> <ul class="right-list" style="border-top:1px solid #ccd3e4;"> <li><a href="http://bbs.gongkong.com/D/200506/75398/75398_1.shtml" title="我翻译的HART275操作手册(全..." target="_blank">我翻译的HART275操作手册(全...</a><span class="sec-rp"><img src="/Content/images/see.png">[3072]</span></li><li><a href="http://bbs.gongkong.com/D/201209/454327/454327_1.shtml" title="脉冲当量的意义是什么？" target="_blank">脉冲当量的意义是什么？</a><span class="sec-rp"><img src="/Content/images/see.png">[20635]</span></li><li><a href="http://bbs.gongkong.com/D/201501/604043/604043_1.shtml" title="通过注册电气工程师考试" target="_blank">通过注册电气工程师考试</a><span class="sec-rp"><img src="/Content/images/see.png">[2245]</span></li><li><a href="http://bbs.gongkong.com/D/201310/530019/530019_1.shtml" title="《永磁同步电机相电流畸变严重..." target="_blank">《永磁同步电机相电流畸变严重...</a><span class="sec-rp"><img src="/Content/images/see.png">[5533]</span></li><li><a href="http://bbs.gongkong.com/D/200908/301527/301527_1.shtml" title="空压机操作规程" target="_blank">空压机操作规程</a><span class="sec-rp"><img src="/Content/images/see.png">[2456]</span></li><li><a href="http://bbs.gongkong.com/D/201103/372444/372444_1.shtml" title="变频器在启动过程中，低频时会..." target="_blank">变频器在启动过程中，低频时会...</a><span class="sec-rp"><img src="/Content/images/see.png">[5887]</span></li><li><a href="http://bbs.gongkong.com/D/201407/568386/568386_1.shtml" title="求问！！！怎么才能获取积分啊！..." target="_blank">求问！！！怎么才能获取积分啊！...</a><span class="sec-rp"><img src="/Content/images/see.png">[2088]</span></li><li><a href="http://bbs.gongkong.com/D/201505/620565/620565_1.shtml" title="电梯不开门故障" target="_blank">电梯不开门故障</a><span class="sec-rp"><img src="/Content/images/see.png">[2079]</span></li><li><a href="http://bbs.gongkong.com/D/200908/300174/300174_1.shtml" title="找高手，谁有CRC8的校验工具啊..." target="_blank">找高手，谁有CRC8的校验工具啊...</a><span class="sec-rp"><img src="/Content/images/see.png">[2723]</span></li><li><a href="http://bbs.gongkong.com/D/201205/435620/435620_1.shtml" title="工频电机能以60HZ运行吗" target="_blank">工频电机能以60HZ运行吗</a><span class="sec-rp"><img src="/Content/images/see.png">[8440]</span></li> </ul> <div class="q-code text-center"> <span style="float:left;"> <img src="//src.gongkong.com/website/bbs/img/er_w.jpg" alt=""><br>官方公众号 </span> <span> <img src="//src.gongkong.com/website/bbs/img/gcs.jpg" alt=""><br>智造工程师 </span> </div> <div style="margin-top:10px;"> <ul id="detailsrightDev"></ul> </div> <div id="custom1"> </div> </div> <div id="custom2"> </div> <style type="text/css"> * { margin: 0; padding: 0; box-sizing: border-box; -webkit-box-sizing: border-box; } ul, ol, li { list-style: none; } img { border: none; } .side-con { position: fixed; right: 10px; bottom: 80px; background: white; border-radius: 8px; box-shadow: 0 0 5px rgb(236, 193, 193); z-index: 99; } .item-imgact { display: none; } .side-con li { position: relative; width: 65px; padding: 10px 0; cursor: pointer; font-size: 14px; border-radius: 6px; } .side-con li:hover { background: #5577bb; color: #fff; } .side-con .item-img { width: 35px; display: block; margin: 0 auto; } .side-con .item-imgact { width: 35px; margin: 0 auto; } .side-con li:hover .item-img { display: none; } .side-con li:hover .item-imgact { display: block; } .item-name { display: block; text-align: center; } .popsec { position: absolute; width: 160px; left: -170px; top: 0; background: #fff; box-shadow: 0 0 8px rgb(236, 193, 193); text-align: center; padding: 10px 0; border-radius: 7px; transition: .3s ease all; transform: translateX(-20px) scale(0); } .popsec.act { opacity: 1; transform: translateX(0px) scale(1); } .popsec::after { content: ""; position: absolute; right: -20px; top: 20px; border-top: 10px transparent dashed; border-left: 10px transparent dashed; border-right: 10px transparent dashed; border-bottom: 10px #fff solid; transform: translateX(-15%) rotate(90deg); } .popsec2 { top: -70px; } .popsec2::after { top: 90px; } .popsec3 { top: -140px; } .popsec3::after { top: 160px; } .go-topcon { position: fixed; width: 55px; padding: 15px 0; text-align: center; bottom: 20px; right: 15px; border-radius: 8px; box-shadow: 0 0 5px rgb(236, 193, 193); cursor: pointer; background: white; z-index: 99; } .go-topcon img { transition: .5s ease all; } .go-topcon:hover img { transform: rotate(360deg); } </style> <ul class="side-con"> <li> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/kefu0602.png" class="item-img"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/kefu0602_act.png" class="item-imgact"> <span class="item-name">客服</span> <div class="popsec popsec1"> <img src="//pic.gongkong.com/UploadPic/gongkong/2022/bbscustomer202208.jpg" alt=""> </div> </li> <li> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/minigra0602.png" class="item-img"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/minigra0602_act.png" class="item-imgact"> <span class="item-name">小程序</span> <div class="popsec popsec2"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/mini0606.png" alt=""> </div> </li> <li> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/wechat0602.png" class="item-img"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/wechat0602_act.png" class="item-imgact"> <span class="item-name">公众号</span> <div class="popsec popsec3"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/we0606.png" alt=""> </div> </li> </ul> <div class="go-topcon"> <img src="//pic.gongkong.com/UploadPic/gongkong/common/2022/gotop0607.jpg"/> </div> <script type="text/javascript"> $('.side-con>li').mouseover(function(){ $(this).find('.popsec').addClass('act') }).mouseleave(function(){ $(this).find('.popsec').removeClass('act') }) $('.go-topcon').click(function(){ $("html,body").animate({scrollTop:$('body').offset().top + "px"}, 300); }) </script> <!--==分页==--> <div id="_Pager" style="width:895px;"> <div class="m_t8 clear"> <div class="gkPage"><span class="gk_page_label"></span><span id="gk_page_label" class="gk_page_split"> <span class="disable_pager psy" >首页</span> <span class="disable_pager psy" >上一页</span> <span class="current_pager" >1</span> <a href="457093_2.shtml" class="pager cur" >2</a> <a href="457093_2.shtml" class="next_pager psyy" >下一页</a> <a href="457093_2.shtml" class="last_pager psy" >尾页</a> </span><span class="gk_page_label"></span></div> </div> </div> <!--==回复框==--> <div class="tj-replay"> <iframe id="reply" name="reply" src="//bbs.gongkong.com/reply/CreateReply?tid=457093" frameborder="0" scrolling="no">
工控网智造工程师好文精选
