名校
1 . 已知
.
(1)若
,求证:
;
(2)设
,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93147b6720810e40b665658a2de65cf7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f20f723485b20d32298961be4c7970f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb3c4c59349a825c9e5bad47ff24479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9adfbe0a0ef522b9e60e832acff4ec82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5438613cda89232a531a69da49dee747.png)
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2023-03-09更新
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6卷引用:河北省石家庄市二南2022-2023学年高一下学期第一次月考数学试题