(1)求值:
;
(2)已知
,化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b977d7698ba5d700c3bd7ae07b063282.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ef4d603e149fc557ae99c9300a5b76.png)
22-23高一上·广东湛江·阶段练习 查看更多[2]
更新时间:2022-12-03 06:45:46
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【知识点】 指数幂的化简、求值
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解答题-问答题
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适中
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afb4aa690c213899c9563b8bbf29147.png)
(1)若f(x)的图象过点(2,
),证明:
.
(2)若关于x的方程f(x)=0有解,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afb4aa690c213899c9563b8bbf29147.png)
(1)若f(x)的图象过点(2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00544cfc2fe697a37b5358feb3d159c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d8a60d134e215cd158fcc990123619.png)
(2)若关于x的方程f(x)=0有解,求a的取值范围.
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