名校
解题方法
1 . 设
.
(1)若
,求
使函数
为偶函数;
(2)在(1)成立的条件下,当
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc9d24d82343771d6a53d7f3036e250.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907a344929dd28678993b4d3d6f9550a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在(1)成立的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b392ae979e54da7e26bbc2d967a72666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00cfe419f43a5f6e34cc3849532e3c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
您最近一年使用:0次