名校
1 . 设函数
(
,实数
).
(1)若
,求实数
的取值范围;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9285171a223cd4147a9196cc8135a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7713241a6c10d6329346db44740cae74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727b7b960bea80caea68404a1f942c53.png)
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2020-01-12更新
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303次组卷
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4卷引用:内蒙古乌兰察布市等五市2019-2020学年高三1月调研考试(期末)数学(理)试题