已知函数
.
(1)若a=2,解不等式
;
(2)若a>1,任意
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f786a8ea59244ba8850ca8fe2d4c24.png)
(1)若a=2,解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb991504d0b69bfbc4a6b6a2bb0535c.png)
(2)若a>1,任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4351cfcbf145b0142a425f04d600c536.png)
更新时间:2016-12-04 00:13:30
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【推荐1】已知函数
.
(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e17be423b8760256d1254bb7601e280.png)
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(2)若
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适中
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【推荐2】解下列不等式:
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(2)
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【推荐1】已知函数
的最小值为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e437437aee94c38163cedf9e09dd733f.png)
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(1)求
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适中
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【推荐2】设函数
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(Ⅱ)若
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