设
(e为自然对数的底数),
.
(1)记
.
(i)讨论函数
单调性;
(ii)证明当
时,
恒成立
(2)令
,设函数G(x)有两个零点,求参数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b1d897bf1170f96cac0c36823a512a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af71cb86a080ab5794e75674a31b92ea.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1192b7858bda8d2912d05e0cab60a115.png)
(i)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
(ii)证明当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f873c39eb43dc445cc29f5a2454fda.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343baff1a0f3a1aaf9d6390ec229bd33.png)
更新时间:2017-03-21 12:03:07
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解答题-问答题
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困难
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【推荐1】已知函数
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(1)当
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(2)若函数
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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
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(2)当
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解答题-证明题
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困难
(0.15)
名校
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【推荐1】已知
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(1)若
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(2)求证:对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5141a5b907f5ff11bbd7cacbd7b5db3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4d16e77a13cb72c849cac26c8ae54e.png)
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(I)用
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(II)若
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