名校
解题方法
1 . 在
中,点P为
所在平面内一点.
(1)若点P在边BC上,且
,用
,
表示
;
(2)若点P是
的重心.
①求证:
;
②若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)若点P在边BC上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac077c25a98e791e4a81b1c48c09015d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
(2)若点P是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699b82be749af3fa36f1fed5122591a9.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4aa4e839e8104005fe94eaf81f503e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3acf551f38311eccdcc325c0d283473.png)
您最近一年使用:0次
2023-07-05更新
|
421次组卷
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5卷引用:四川省巴中市2022-2023学年高一下学期期末数学试题
名校
解题方法
2 . 已知
.
(1)求
的最小正周期和最大值;
(2)在△ABC中,三个内角满足
,角A满足
,
,
ABC的面积为
,求证:
ABC是直角三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58bc170c5789c59678734b9f0a4015d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在△ABC中,三个内角满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f4be76875ce5423010bc9c3c08f544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44578106bc014446efbcb40d91606d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd434d8cec7ee2ee83186f3232dd872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
您最近一年使用:0次
2022-12-08更新
|
278次组卷
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3卷引用:四川省南江中学2022-2023学年高三上学期12月阶段考试数学(文)试题
四川省南江中学2022-2023学年高三上学期12月阶段考试数学(文)试题四川省南江中学2022-2023学年高三上学期12月阶段考试数学(理)试题(已下线)第六章 平面向量及其应用章末题型大总结 (精讲)(3)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)
3 . 已知函数
,
.
(1)求
的最小正周期及单调递减区间;
(2)求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78f80e8f13c1695db291d3e0f9181d54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778662c16848db470c6537705b8a839c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5967cc62862986840af4dd29df4bcc41.png)
您最近一年使用:0次
2020-01-18更新
|
279次组卷
|
2卷引用:四川省巴中中学、南江中学2020-2021学年高一上学期期末联考数学试题