名校
1 . 已知
,
.
(1)若
,求
的取值范围;
(2)若函数
恰有两个零点,求实数a的取值范围;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b39c5d66018f0736a0457961c91e1c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a1141aa62d95fc3b75e3d6833aaaf0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a3f237b03aaa5f0fb96e572706349c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/732a3c49d8680218bdcc2f39f2b4f601.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08180ea9d4238fd449255a0b47f3bb2f.png)
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2 . 已知函数
.
(1)求方程
的解;
(2)若关于x的方程
在
上有实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d540673cb5286eaa13a84e302e1a5270.png)
(1)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515f88ff8fa1cad560307bd2b2e13fcb.png)
(2)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3d8787fe64974039d257b534733289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095c5f7a3c6917839c01fd1e5654ee91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
解题方法
3 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64642926f098db6a632e50d22cb06beb.png)
(1)当
时,解不等式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f87e47450791e306090c3132c73100.png)
(2)对不同
的值,讨论
的奇偶性;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64642926f098db6a632e50d22cb06beb.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f87e47450791e306090c3132c73100.png)
(2)对不同
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解题方法
4 . 已知函数
.
(1)写出一个奇函数
和一个偶函数
,使
;
(2)对(1)中的
.命题
:函数
在区间
上是增函数;命题
:函数
是减函数;如果命题
、
有且仅有一个是真命题,求
的取值范围;
(3)在(2)的条件下,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd3360641bb9fe864f1c79a42552b58.png)
(1)写出一个奇函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc50f609440a36953561a88e8acfee1.png)
(2)对(1)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d2ad1c7685e9930f028e2e143f091f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d55ef0d1b7ea88d92fd6e1ecebb5f5.png)
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名校
解题方法
5 . (1)求解关于
不等式:
;
(2)已知
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab4b8a5aad5798d6c495fb49a7e3ac5.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9088e31e00eaa4e95c1e6717b0c82cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed54d127c43cf45175f9b66e51f122b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143ef5bbdc4748121e22573ba13eec15.png)
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6 . 已知函数
.
(1)求该函数的定义域,并证明其为奇函数;
(2)判断函数
在
上的单调性,并说明理由;
(3)对于任意
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2d08cc0467eeb8d4fcf4d876729967.png)
(1)求该函数的定义域,并证明其为奇函数;
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e1c9c97de9198d47306216e9961b80.png)
(3)对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9186dc3f15560a1e10970193893e9f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a3fc9c353fd2e294d615fc5b4f3914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
7 . 已知全集为实数集
,集合
,
,求:
(1)
;
(2)若对任意的
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b012747aa668545006314686ad9198.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f9c07e7f360dbab93263c587a5fe4f.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81919684bc4047d376c7e57dc6c8f1c.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d91b4f4d09a05aef843cc1bd0198a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e471669c324e6cae74146a62e1f08ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
8 . 设集合
存在正实数
,使得定义域内任意x都有
.
(1)若
,证明:
;
(2)若
,且
,求实数a的取值范围;
(3)若
,且
,求函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a293f8a5cb9cb0d905ca25a01faefc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b452eaa74ef4e90a6661350333df7e49.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb1ba12c3538ad16ac98407658246f0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/021f43d4d536af9301adad72758d3355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764df344e05f8ef1a97b346ddf44a5a0.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7974d7d586f9697ad00b34ce5ada820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9511a2031188decf655cdfc0302b4740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e915b67f8f747698b8b46d37bc453667.png)
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解题方法
9 . 已知
.
(1)解不等式
;
(2)判断函数
在其定义域上的单调性,并严格证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d94accdb1056c6c03b1fc33deed162.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2e0bb6d63b7bcaee92a470d58cc399.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff26491b344566f7bb04cbb7deb6baa1.png)
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名校
解题方法
10 . 已知函数
,设
.
(1)当
时,解关于
的不等式
;
(2)对任意的
,函数
的图像总在函数
的图像的下方,求正数
的范围;
(3)设函数
.当
时,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bac74808b9877e551f39ce57d5f41b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ad4b6efae29ab7dec69eedf348eaa0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e02125e0a1f3cda39742b765baa74c.png)
(2)对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f58427d5aa7deeca47c8789241913f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ca70a0df946f11f060de3821aea08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f2009030213f354e06954c788caa41c.png)
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