已知函数
,在点
处的切线方程为
.
(1)求
的解析式;
(2)求证:当
时,
;
(3)设实数
使得
对
恒成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/841417b49888ce8c94b2d2239442e870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01d07f3a82196cabb98a2ab98686eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb2ee55513330b4bb76111b0a745522.png)
(3)设实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef07f8714d5dfff345b2c46e03ec18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01d07f3a82196cabb98a2ab98686eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
更新时间:2018-11-08 16:59:51
|
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解答题-证明题
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困难
(0.15)
【推荐1】已知函数
的图象在点
处的切线方程为
.
(I)用
表示出
;
(II)若
在
上恒成立,求
的取值范围;
(III)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b198677e91defa3ffba5e1865eb387c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
(I)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
(II)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f890eb5d86a7484141a8aa9d946552df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(III)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aac55d3e280c5629d97e619bf074430.png)
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解答题-问答题
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【推荐2】已知函数
,曲线
在点
处的切线平行于直线
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(1)当
时,求b的值;
(2)当
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在区间
各内有一个零点,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e792516a5e4c7f7e78a302f1c7498e1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f7fbfa2214ca72495a993b2fed8b61.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a256be81db4bf281cb1da8b7055c3e56.png)
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【推荐1】已知函数
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(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cce6b1d945738b852ab3dcd664019f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a1a5f2533b8ea54b7022383f875666.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff06fc6ce128397a6471b834113baec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d68efa1e5a79e970de042c8d5ea487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e426a50fab1e21a5460bf62613ad2d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2864e08325cd1d6c627ea204a31e70.png)
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解答题-问答题
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困难
(0.15)
解题方法
【推荐2】已知函数
,
.
(1)求
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(2)证明:当
时,
.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b923fcc6830f02925f594edcb9fcc90c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6bcf1135449e1c9bb97f6927aa55b3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cd1568daf759620e6842d75d88d558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405361d7be3c9e4d462a4e955d8fe3c.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
名校
【推荐3】已知
,函数
.
(1)当
时,求
的单调区间和极值;
(2)若
有两个不同的极值点
,
.
(i)求实数
的取值范围;
(ii)证明:
(
……为自然对数的底数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e37c35e33ffa1a55a0693ae2319da91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d713aa9f44f9967e324f70b1a980f490.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.png)
(i)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47b53f8e19a0140c9a01226142a44126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a35e5501b2700f624bd4a9144fc9ec.png)
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