解题方法
1 . 设函数
的定义域是
,对于以下四个命题:
①若
是奇函数,则
也是奇函数;
②若
是严格增函数,则
也是严格增函数;
③若
是严格减函数,则
也是严格减函数;
④若
存在反函数
,且函数
有零点,则函数
也有零点.
其中正确命题的个数是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276b142a9d9f0a87425a668dd6501f15.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276b142a9d9f0a87425a668dd6501f15.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276b142a9d9f0a87425a668dd6501f15.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135bcf6d7f7c04641823b90f1d038eee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7f36d9b3e62abafdd9fad3181ff4c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac5b738cd5ea12f6d93e9c5fc6bcd5.png)
其中正确命题的个数是( ).
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 若函数
的图象关于直线
对称,则实数a的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e12126a488269810928e505d645e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
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解题方法
3 . 已知
的定义域为
,且其图像如图所示,则
的解集为( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/3168341a-0a99-4fb5-bb06-f7fc07008dac.png?resizew=233)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1475ac0e969346134c74c54b03203620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff508a288d6fa0f5912ab06f75167a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/3168341a-0a99-4fb5-bb06-f7fc07008dac.png?resizew=233)
A.![]() | B.![]() |
C.![]() | D.![]() |
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4 . 已知函数
是函数
的反函数,函数
的图像和函数
的图像关于直线
成轴对称图形,记
.
(1)求
的解析式及定义域;
(2)在函数
的图像上是否存在两个不同的点A、B,使直线AB恰好与y轴垂直?若存在,求出A、B的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855085188f1053f46755de1946451ee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86f084fa42fb0ca06850713e4d3be629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e15c2171c1be9ec394494ad822a048d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
(2)在函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
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解题方法
5 . 已知函数
,
.
(1)判断该函数的奇偶性,并指出它的单调增区间;
(2)该函数是否存在反函数?若存在,求出它的反函数;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c48dedd7a406b39525d786bd2ec55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5850426712b921e7c18b9a9a43712cc0.png)
(1)判断该函数的奇偶性,并指出它的单调增区间;
(2)该函数是否存在反函数?若存在,求出它的反函数;若不存在,请说明理由.
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6 . 若函数
是函数
(
,且
)的反函数,且
的图像经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b900176db359c82400861d9ec56c6948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
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解题方法
7 . 设
,函数
,
是
的反函数,求满足
的x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0784c2d6f71786119603b6276c8bb3f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d6b59f4796a45963dea76b89c72bea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300cd4f5096e25c198ad9f6338f3dff4.png)
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8 . 设函数
,若
,
的反函数为
,则
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c237dea4c6470d5973e0b48fcee1fd8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78c28acc1d0b6dd36f7af30051c0341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0219dc8276677c2562513056abd9be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dfd2fc6c83bcaed73cc3b3866603664.png)
您最近一年使用:0次
解题方法
9 . 已知函数
.
(1)求反函数
及其定义域;
(2)判定反函数
的单调性;
(3)若不等式
对
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6def9ae1ea8b433eb852c96f1fa3c8f.png)
(1)求反函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d6b59f4796a45963dea76b89c72bea.png)
(2)判定反函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d6b59f4796a45963dea76b89c72bea.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499f5c4b58e129e80006ec13de9944e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072c49a32e8d537004c2b14bc0403539.png)
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10 . 求下列函数的反函数:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09abd912fe60090ed5a9eead179680a9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502cf7d864627a1b10d53e9b8a15a7d0.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/674d493228a70a7ca53b5dacb11561f2.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbd9e52b79fb84c320dc522e13d4f0b.png)
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