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一节课学会数列求和所有方法，收获拉满！
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App22:10![导数分析函数的极值与最值[导数5]](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/8d628d4a64ce414db50698ae30db97de~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=2025011904560332EBB18FC3B435D0D230&requestFrom=704&version_code=80402&x-expires=1768769763&x-signature=hz4g2NTdnH%2B058fNK7rlMRZsw7M%3D)
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App23:45![[高考数学]看导数猜原函数，构造函数解不等式](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/9559157038c549229efb89e9d282d8c4~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=2025011904560332EBB18FC3B435D0D230&requestFrom=704&version_code=80402&x-expires=1768769763&x-signature=LOYscJcPnFw5acUE7%2BkpJiqDmVI%3D)
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App17:39![听说圆锥曲线把你难住了[高二期中]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/oIRBfAsVAqAQpA9nEMCFEPYLICXfTAhZKgDhAl~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=2025011904560332EBB18FC3B435D0D230&requestFrom=704&version_code=80402&x-expires=1768769763&x-signature=MRaCrvDWi%2BP7%2F%2BFSAM%2FSRZ8JWts%3D)
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