2021·全国·模拟预测
名校
1 . 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
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3卷引用:河北省衡水市深州长江中学2022届高三上学期开学考试数学试题
名校
解题方法
2 . 已知等比数列
的前n项和为
,
,且
,
,
成等差数列.
(1)求数列
的通项公式;
(2)设
,求数列
的前n项和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b708c8dcb2d66eb2ce0b3718a9cd924a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6a8306b8075ad9ce84d9114d086961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbf80cb71406fd14621139149f7ed9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/496b12437ca67b61453b28480ad7aaaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c7cbefb0c85d88a5096b4af9e703d4.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1227ebe642586ad76c344db8ce8fc90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4464b3b4eb6e52ee02f095aae84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26cd1601fe7e76e1e2dc0b4909324a.png)
您最近一年使用:0次
2020-12-25更新
|
687次组卷
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8卷引用:甘肃省定西市临洮县2024届高三下学期开学假期学习质量检测数学试题
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