已知函数
.
(1)求函数
的单调区间;
(2)设函数
恰有两个零点
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c128f4572ef7b9333865c835ddb68c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设函数
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ec808ad60dbf016632ec816eaca1df.png)
更新时间:2019-07-15 17:57:35
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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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,
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.
(1)讨论当a=1时,函数
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(2)求证:在(1)的条件下
;
(3)是否存在正实数a,使
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(1)讨论当a=1时,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求证:在(1)的条件下
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf67014ab217c6cacd76dc4b19774d8.png)
(3)是否存在正实数a,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解答题-证明题
|
较难
(0.4)
【推荐2】已知函数
.
(1)求函数
的单调区间;
(2)若函数
有两个零点
、
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e498dc0ac7b435ae0b600df63b9e2950.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
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【推荐3】已知函数
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是
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对任意
都成立,其中
为整数,
为
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(1)求
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(2)若不等式
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名校
【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd05d0ec92997bd272cd7ac32614fabd.png)
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【推荐2】已知
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(1)设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5909dc6df1d902054bdc36e313ea69b.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585de67a3fc494297d375d339af6d153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若
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【推荐3】已知函数
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(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eececc99fc28d96333f6c0f3e04ef742.png)
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名校
【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871bbc0c88332bb2de90f33024da19c2.png)
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(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530a664e40a51a906ac10e44ff360807.png)
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a482c5dcad03b79cb1ce314bb474ba.png)
(I)讨论函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a482c5dcad03b79cb1ce314bb474ba.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(II)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff5f77525857f08d86a61b6113fde71.png)
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