1 . 已知函数
.
(1)若
的解集是
,求不等式
的解集;
(2)设
,
,若
是
的充分不必要条件,求实数
的取值范围;
(3)若
,
,解关于x的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fdad1e5b53f816db7b5f092357e040a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e12a49601927242c500e1e3b331112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259fc8df4d5abe96e0e2af06e5df0010.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/044070dfca41990c0f3b5025a7c88182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a13e843c5aae0d97f71774967e32e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4638bb5fb3deacdcf65da8c8ac4aacf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b599a5cbbca3c20638a1a14ff37d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
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2021-08-01更新
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