已知函数
.
(1)若
,求
的单调区间;
(2)讨论
的零点情况.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca07ba506aa0c9761a1b13f8635d1c0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
更新时间:2022-08-30 22:30:49
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解答题-证明题
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名校
解题方法
【推荐1】已知函数,其中
是自然对数的底数.
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5815ab5cc9753e2e6415a97d6f4d3ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
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|
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(0.4)
【推荐2】已知函数
的周期为
,图像的一个对称中心为
,将函数
图像上所有点的横坐标伸长为原来的
倍(纵坐标不变),再将所得图像向右平移
个单位长度后得到函数
的图像.
(1)求函数
与
的解析式;
(2)是否存在
,使得
、
、
按照某种顺序成等差数列?若存在,请求出该数列公差绝对值的取值范围;若不存在,请说明理由.
(3)当
时,判断
在
内的零点个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af87a37fb14dd2b66ec550d7b348f04c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54c102cbcfc98d0d037180437700d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4fcc4c40827f5c45bb33c09f44fdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03e483e8a37a8e0e1fb327f99ad93ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d0532bf8ea573af0bc5bbda9e52154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab1ca1912777d6de8d81a93ced1be09.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144c8a7b47cd8aa949cef38c720dfffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76729ca286fd5b40faf83150106f5992.png)
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【推荐1】设函数
,
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(1)若
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,使得
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af079e1c79c4f240b3b50a19e8d3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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(2)若存在
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【推荐2】已知函数
.
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(1)求
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(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63774ad98a67ba9ab494a4575f15bc21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5701f7fab63664e1a385c31eca18666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
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【推荐3】设函数
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有3个不同的实数解,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2beb9de9d7aa2ee49bcc5fe32348456a.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)( i)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
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【推荐1】已知函数
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(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7d4b04fdae421a5ad24c5fee042983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
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解答题
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【推荐2】已知函数
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,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8245d15dd50edcb262d0c1c082ea0fff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d87607053524cb13c31343fb18a09f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8326e36290e87dd1a4f3d03f66dffd.png)
(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f20c68d963d25e213538a2388ec45a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9b6e510d7f09fdcb75a0776499de85.png)
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求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
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您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐3】已知函数
,其中
.
(1)当
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在区间
上的最大值;
(2)若函数
有两个零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2265e7209eee6b98cd2484d68d9b427b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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