打开App
360P
秦九韶公式的证明，如何统一海伦公式与秦九韶公式？
秦九韶公式的证明，如何统一海伦公式与秦九韶公式？
高中数学合集13/59
App08:13
App07:54
App06:49
App09:18![[高中数学＆自主招生]教材上删掉的均值不等式究竟多好用？](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/da818779660c464482402ca4dbb87b87~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=8vHgD2oM%2F0hzlwe%2F2AX4oM0Stnk%3D)
App09:27![[高中数学]2020天津高考数学导函数大题-比值换元，巧用放缩](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/d46ece0739b94f80a437a6baaaa679db~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=oN0NTa3QbizaLiTZlgmnJAgR%2FSc%3D)
App12:23![[高中数学]函数性质--单调性，抽象函数单调性怎么证](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/50fcd494bea24d9ea17a700b6a96b3fa~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=cVn3aR5mUnTCj7uqydGWpFNZ6ME%3D)
App17:39![[高中数学＆自主招生]三角形重心与向量综合](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/b8e90bf434c8405389118c11159430f1~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=SIT0ZKllwe9xbtKxPl8rq7iPcU8%3D)
App13:38![[高中数学]数列求和，裂项求和，指数型裂项如何理解？](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/d9745d6d85a048cb91531b82529e5c8f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=l%2FbgjD7mv8EMqgjnTwBXGl00Zq4%3D)
App10:56
App12:38![[高中数学]如何证明均值不等式？（居然可以用射影定理）](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/a98eacca0b46481496141c0430788a2f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=vphFrtf0lPmkZrmxpQAmbEsZ33k%3D)
App04:40![[高中数学]圆锥曲线中倒斜式的妙用＆关于y的非对称韦达式](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/b3af5f74cea2410585f3a5e18c488891~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=Jas8SFS38kFMo4wE6MxO%2FUEr7bk%3D)
App08:58![[高中数学]二次函数实根分布的这道题目，你会做吗？](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/71d2f44775c1482e82595f3bb1a3dfda~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=Di303FBr%2FbIgUSee8YzpG0GMVPI%3D)
App08:58![[高中数学]点到直线距离公式＆平行线之间距离公式|解析几何](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/4e67ef1f2d6a4f7d8da4cfde2dec36b6~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=9fHLCxfZ0%2BpjUZVGfST4N%2FxIwJ0%3D)
App08:09![[高中数学]洛必达法则的正确打开方式：洛必达→洛必错！](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/0b8ed316528e40d6898bfe0f2bd97181~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=Wq37SF4Pf2zCju%2FhEbc6%2BwgfOoY%3D)
App20:15![[高中数学]立体几何中的将军饮马问题，初中生也会解](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/6ed9ddf0221342329624ad6a8fcb2a61~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=AQ%2FIRyotjWvgs46qFmf43fsTj9k%3D)
App11:19![[高中数学]圆锥曲线中的四点共圆和圆幂定理，斜率之和为0？](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/1c946989ae604f34952e578927fc1b43~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202505021138421DBAFEBB3A821FF26DCA&requestFrom=704&version_code=80402&x-expires=1777693122&x-signature=XfXXHuv0Ffafzdk4V7DqUhZwjsM%3D)
App07:25
App05:47
App13:16
App23:20
App18:36
App25:53
App23:35
App34:43
App26:56
App15:00
App08:15
App11:29
App04:24
App12:17
App12:48
