已知函数
有两个极值点
.
(1)求实数
的取值范围;
(2)求证:
;
(3)若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d4bd1be2b02b49269381b8dccf0100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff60eab72de85437e12806474281612.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5014532a49964655c3105c8827c5e840.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1beddd2795b3ab53f40fdfb502297ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96b8f760bc732836c28761d8636ae06.png)
2021·浙江金华·模拟预测 查看更多[3]
浙江省金华市义乌市2021届高三下学期适应性考试数学试题(已下线)专题4.10—导数大题(双变量与极值点偏移问题2)-2022届高三数学一轮复习精讲精练(已下线)专题3.导数 -《2022届复习必备-2021届浙江省高考冲刺数学试卷分项解析》
更新时间:2021-05-19 18:32:25
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解题方法
【推荐1】已知函数
,其中
为非零实数.
(1)求
的极值;
(2)当
时,在函数
的图象上任取两个不同的点
、
.若当
时,总有不等式
成立,求正实数
的取值范围:
(3)当
时,设
、
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6223c3678ff0901122781bcd0bcdeed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbd5bb726a08c308b48373afebbb768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099f357e54f2f7ce159e7c942e6f2c07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8198c3b302b3820e86763428eb1e91cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3463ced6030af957f13f9ba05b977c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7838e6e705ec359ca0a27ecb131cce22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a850874036273f74ce65d00038e435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2519954ec2deabecd7e057886fa4023c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6161be3c8fe74ed264bb8cd6d708aecc.png)
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91181a7d8ccb93850b37fbcd091688a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(1)讨论函数
的单调性;
(2)求证:当
时,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91181a7d8ccb93850b37fbcd091688a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e966c08111eafe9797b2677b006510.png)
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解题方法
【推荐1】已知函数
在
处的切线方程为
.
(1)求函数
的解析式;
(2)当
时,若函数
的3个极值点分别为
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d852d25602b8f0789f0299f86da0b1d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a43283d1314c51bd800b53f9259a277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafd7df7225e7af0b74caf9165bef0f6.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7fa364ae912baf65005d7e280d2362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a51ebdd514d9c2b14c3c2fdd99779df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
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【推荐2】已知函数
,其中
.
(1)若
,讨论
的单调性;
(2)若
不为
的极值点,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748f9dea0f9e6ad3801ee990c896b5e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915d6bb6908f286b4d3f95897ece6390.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐3】已知函数
(
).
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ac426e8283755a4c605753299261c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
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(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ebddace19609baa61461fce9833da0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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【推荐1】已知
.
(1)若
,求
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处的切线方程;
(2)设
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc68b32faba117b62659bf0fbc269b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c765461ae1a6c70f5cbdcb6c932a22b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b0c39690480750fcd3415be6224bc7.png)
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【推荐2】已知
.
(1)求
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,有
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的最大整数解;
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,若
有两个零点分别为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b8ef4c0ab9333ce61970ecf54c0a48.png)
(1)求
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(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec3dd08243ce7e9ba69ad79edc70d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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【推荐3】设函数
,
,
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(1)若
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在区间
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(2)若对
,有
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的取值范围;
(3)设
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中有且只有三个整数,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80056c6df36d0721f273468dd2aafb6e.png)
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc3eb2b0592ef2352237c35fdb50cd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5889da8087df7d1a5bd254a2f9b59edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6b9bb54a8754212abf97bf3c9c0116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f896b49af6591deb20aca9ff3bb3099d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a653f1a63534240b602c63c3093449c0.png)
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(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1567cd8c638bee24d4aa4153518a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f78255fe28e7b11e0541282f36f12d.png)
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