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1 . 已知定义在
上的函数
,且
恒成立
(1)求实数
的值;
(2)若
,且
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b5070ce370431d6701e17eaaee0d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d0cd47609b9d1865dfff4979161cf5.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f0784ce7148d8fed3dee5c508eae05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0538b39e703cc71355da6cfc5faea4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d61d98c3d75e65b45f98b9f41da38.png)
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2019-09-12更新
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5卷引用:新疆新源县第二中学2019-2020学年高二下学期期末考试数学(文)试题