2023·全国·模拟预测
名校
1 . 已知函数
.
(1)当
时,讨论
在区间
上的单调性;
(2)设
在区间
上存在两个极值点
,
.
①求a的取值范围;
②若
,求
与
的等差中项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf91b0f395bc2fba940bb44e1d735dae.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecd9b82656fa92f59cc80c8938e12f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083479b94380e8d659eff92d10a1989d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
①求a的取值范围;
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1540b6b10f07a867618a1eec02e2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
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2021·全国·模拟预测
名校
2 . 已知
中,内角
,
,
所对的边分别是
,其中
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34831b9a273343bf1ee847d8a63d6ade.png)
.
(1)求
外接圆的面积;
(2)若
,
,
成等差数列,且
,求
的值以及
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34831b9a273343bf1ee847d8a63d6ade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f26eac59362ab4175454121037a1e2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b661c79b7b866204fd4084c37bdd4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bd59e5db199b4133db4ad64aae06bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1d98c8400450363549b984363085e4.png)
您最近一年使用:0次
2021-05-23更新
|
301次组卷
|
3卷引用:普通高等学校招生全国统一考试 数学押题卷(五)
3 . 1,3的等差中项是( )
A.1 | B.2 | C.3 | D.4 |
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