11-12高三上·江苏扬州·开学考试
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1 . 已知函数
(
是自然对数的底数).
(1)若曲线
在
处的切线也是抛物线
的切线,求
的值;
(2)若对于任意
恒成立,试确定实数
的取值范围;
(3)当
时,是否存在
,使曲线
在点
处的切线斜率与
在
上的最小值相等?若存在,求符合条件的
的个数;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2011/9/7/1570305343266816/1570305348526080/STEM/b74063810e8f4b34ae6f652717618738.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a67a65dbe9b0fa39abdf30db6c76392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c891ad0fbe5235b0456db275a23d1951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74c764868956c34970ff08a8b978d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b26c238a3028a6403b56726435cac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
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2016-12-01更新
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4卷引用:重庆市渝北中学2024届高三上学期7月月考数学试题
重庆市渝北中学2024届高三上学期7月月考数学试题(已下线)2012届江苏省扬州市安宜高级中学高三上学期期初测试数学2020届江苏省南京市高三下学期5月模拟考试数学试题江苏省南通市2019-2020学年高三上学期开学模拟考试数学试题
2 . 设函数
.已知曲线
在点
处的切线与直线
垂直.
(1)求
的值;
(2)求函数
的极值点;
(3)若对于任意
,总存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101057d01230a767c0f719c08a08f664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c887da0c850acf41ab249cc262ae39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d14e1ba21ccee640249efcaff631b4f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(3)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd239b2c05adcc0f43cbeda4d6a0f69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a6f8e27dc6ba5ff8d97043a2d14d74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49db73a047e718dbe2a978edab7eabae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2卷引用:重庆市七校联盟2019-2020学年高二上学期联考数学(理)试题
3 . 已知函数
,曲线
在原点处的切线为
.
(1)证明:曲线
与
轴正半轴有交点;
(2)设曲线
与
轴正半轴的交点为
,曲线在点
处的切线为直线
,求证:曲线
上的点都不在直线
的上方;
(3)若关于
的方程
(
为正实数)有不等实根
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd14ea273c21800c00132219688c61c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
(1)证明:曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7f82ff0d82fef6094b313ce8acfedd.png)
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4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0455e23bde86e7e912f9aca84145d0.png)
.
(1)若函数
有两个极值点,求
的取值范围;
(2)若对
,函数
恒成立,求
的取值范围;
(3)证明:对
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0455e23bde86e7e912f9aca84145d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9cd3690e7aa3debb1ed054a9f622da.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f832d9cca2d5c9d76d38374e2a258d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)证明:对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72620c113a6fe83273803a9ac24baa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc8c9f6cbca5a13a20ffe4b0c42838e.png)
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解题方法
5 . 已知函数
,
.
(1)若
,求曲线
在点
处的切线方程;
(2)当
时,函数
的两个极值点为
,
,且
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989efa81920b81999fe14cd897042c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba98d7b8689f07a147cc1c84023fdab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829ac29f2af26669fb5061d40ab7a0ef.png)
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解题方法
6 . 设
表示自然对数的底数,函数
(
),若关于
的不等式
有解,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6394b5b3b12e2288a54dffae649b9079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad11a054d995a3277a1a5c96fe7d338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.0 | D.![]() |
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7 . 已知函数
(
)在其定义域内有两个不同的极值点.
(I)求a的取值范围;
(II)记两个极值点分别为
,且
.已知
,若不等式
恒成立,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5124251b521fb2525f55b99ee9ff6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(I)求a的取值范围;
(II)记两个极值点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5def2e680848aaf69b5a8c0f50ce05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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10卷引用:2016届重庆一中高三下学期3月月考理科数学试卷
8 . 已知函数
,
.
(1)求证:对
,函数
与
存在相同的增区间;
(2)若对任意的
,
,都有
成立,求正整数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1c5a6e27236387623481b1250326ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4475d7483818e64accb33e96ff90c83.png)
(1)求证:对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6e67c85971a3fbef7a0b0a59b92dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fce924911d5ed93147dfce9e41c2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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9 . 已知函数
.
(1)讨论
的单调性;
(2)设
的导函数为
,若
有两个不相同的零点
,
,设
;判断p与2的大小,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc07ada99b70b549221a1bc356245c5.png)
(1)讨论
![](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/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.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/2710db49e65d16762aeef74d21f1f0b4.png)
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解题方法
10 . 已知函数
的图象与
轴相切.
(1)求证:
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c299e49944949fa518d72273f92cd29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848a38231ad51e6068cd635487070e92.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d4a0567bb84dd2132efbfa1e8b2a91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e8def40736577921ac5ef7e9354445.png)
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