已知函数
.
(1)当
时,求函数
的极值;
(2)当
时,证明:在
上
存在唯一零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995d35b828405b748236fde21520c6f9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
更新时间:2020-05-20 20:07:13
|
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解答题-证明题
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较难
(0.4)
解题方法
【推荐1】已知
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(1)当
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(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:
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您最近一年使用:0次
解答题-问答题
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(0.4)
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【推荐2】已知函数
,
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(1)若
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处的切线斜率;
(2)证明:当
时,函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9259595142e480c05c247249e530d9a0.png)
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150e8e4ca6aa729a72a6a17c36b8ebfe.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f8ea393c9d4d5d9044eb807e3d800b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e9d271392e54ef2055c434430a8dc0.png)
(1)当
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(2)当
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(1)当
时,证明:
;
(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cace2f660ff27e6c919014c97480111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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