1 . 已知函数
,曲线
在点
处的切线为
.
(1)求
的方程;
(2)求函数
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d58ce1c245f2ce6f643948f26e41b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2 . 已知
,
.若
的最大值为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8bd2cc766b537bd06f714f738f2b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2012462d39b5046960415be8430c817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df313d9efbb8a649fe4cd8aa05a5a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.-2或![]() | D.![]() ![]() |
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3 . 已知定义在
上的函数
满足
,当
时,
,则函数
在
上的零点个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e298fe246eef819dd9b1edabe3bb9cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50af11c345056215054f7cfe679939da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a391b3792e477a36041d2d43fec404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015e8a11525a7fbc5bb18562b07fb73f.png)
A.3 | B.4 | C.5 | D.6 |
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2023-04-06更新
|
334次组卷
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2卷引用:陕西省延安市子长市中学2020-2021学年高二下学期期末文科数学试题
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4 . 已知函数
.
(1)当
时,求函数
的单调区间和极值;
(2)讨论函数
单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b727d5747095847e42e7eb7381854c3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2023-04-01更新
|
1418次组卷
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7卷引用:天津市第二十一中学2021-2022学年高三上学期期中数学试题
5 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)当
时,求函数
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04dcef02a462be2f42fc0c4e24b651e3.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/054234a525b8410b4d65409a8c68b5ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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6 . 已知函数
.
(1)求
的导函数;
(2)求
的单调区间;
(3)若
在区间
上的最大值为20,求它在该区间上的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e59b5d3823bed613137bc77e82a610b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
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7 . 已知函数
.
(1)求
在
上的单调区间;
(2)设
,试判断
在
上的零点个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ea282d81a6e1c18c73a7785352bf03.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71163f419555f2ed76075c8ff659fbfc.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d915d5025f5191b1c1485cf8a94b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
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2023-03-19更新
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438次组卷
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2卷引用:陕西省榆林市神木中学2021届高三下学期高考仿真考试理科数学试题
名校
8 . 设函数
.
(1)当
时,求函数
的单调区间;
(2)设
的极小值为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eaabe2b6420fbec131d4bd129ea1a3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2023-03-14更新
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214次组卷
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2卷引用:湖南省长沙市南雅中学2020-2021学年高二下学期入学适应性练习数学试题
9 . 已知函数
.
(1)若函数
在
处取得极值,求
的单调区间;
(2)若
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/645c993c73304807a69db775a37f7bc1.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317f9ce5d2b8b00117904ec6bd50ddc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67cbb47080afc6ed336950a0fc2b04cc.png)
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10 . 已知函数
的最小值为0,其中
.
(1)求
的值;
(2)设函数
,证明:
有两个极值点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466a7b619dd284f5fe430a7eeea65575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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