名校
1 . 已知函数
对任意x满足:
,二次函数
满足:
且
.
(1)求
,
的解析式;
(2)若
,解关于x的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d094f24ee78ea304418a31dad4ae62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26fc07003acd1957e27825ac150b402b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6808909ac63a6b2f9d32c08cb793724.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7007d13d5273c7ad1e5aad48ba7e3339.png)
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2 . 已知
,解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f452035eb1caa44ecf978780feb490ca.png)
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解题方法
3 . 已知
.
(1)当
时,求满足
的
值的集合;
(2)求满足
的
值的集合;
(3)当
时,
恒成立,求满足条件的
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc82a9f735c9b896098e652b540c1fa.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab839d8569171afab5ed55c22013aa72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d462ed4ec22e8fe51f09eb30e8792532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882b660047bb6ded500cedba57958e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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4 . 已知不等式
的解集为集合A,集合
.
(1)若
,求
;
(2)若
,求实数
的取值范围;
(3)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7e48dd3bc72004e6549a51c3d98ec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65397186779d9205c93b1ba96145dadd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
5 . 已知函数
.
(1)若关于
的不等式
的解集为
,求
的解集;
(2)若
,解不等式
的解集.
(3)若
,对于
,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19939baec6e2051a8cab2bc02474a876.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768302bab7e43d9b5adce43cbfa777bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f37dc17b27d96913fab0552928a9fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebadf71a3c73c1d82ae821018a7f67c0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebadf71a3c73c1d82ae821018a7f67c0.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/413a1c16b39e71acf061e7658b5429cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dbd0607f887e482b89e9c2122496e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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6 . 已知关于x的方程
在
上有两个不同的实数解,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c3e0a59e86ee07ab0ffaad6687ac6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01b6fb6a1c7a895df528382a5583444.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 已知
,若对
使
成立,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef5a09ce49b6addb3e0091e37f4dccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6724baa4cfe8013e519545a4e6912eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e8dc00cdc96860c9cbf8ac09677fc.png)
A.函数![]() |
B.当![]() ![]() ![]() |
C.实数![]() ![]() |
D.实数![]() ![]() |
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8 . 若
,则关于
的不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d61f98f7418eda31a1d7c457e3841c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5547d8609eb4238877a2ed2b249f9a9b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
9 . 已知函数
.
(1)若
,解关于
的不等式
;
(2)若不等式
在
上有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238004df3dc97bb5c19e0dd5760956e4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d49443243d30fa8102734f7b554dd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907e95bce05d469d84480868706d4ad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
10 . 回答下面两题:
(1)已知函数
,若对于任意
,都有
成立,求实数m的取值范围;
(2)解关于x的不等式
.
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0da7e7c8b074ad3b0c85736c8ec5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/973852dec155d3b5b9a1ac6df48c04e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
(2)解关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce83c10d4709026d397361b4ee54ba32.png)
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