名校
解题方法
1 . 已知在
中,角A,B,C的对边分别为a,b,c,且
,
,
.
(1)求b的值;
(2)求
的面积;
(3)设点M为边BC的中点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3f11974b878b1c24185d84a3b978dc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a4d496bea80757ce78844f351fd5dd.png)
(1)求b的值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)设点M为边BC的中点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267f14afad334ea1ab7f31da18ad94c7.png)
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2 . 设全集
,集合
,集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9a9779c1aa971c463447e664aacda8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5dfd37b088dfbac79754b7a3efaafb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38ce694992a4b6d5bdd20931419dc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9483e122e2b8b02794ce03405ba48a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-06-14更新
|
472次组卷
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3卷引用:天津外国语大学附属外国语学校2020-2021学年高二下学期期末数学试题
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3 . 设x,
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f370a1d4dd341e5ab1774a66c66c1204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db018daf5c557df13ec2e2cd2c8b4cbe.png)
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4 . 若复数z满足
,其中i为虚数单位,则z=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d555ad6b40a201242083540f8e10d5.png)
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5 . 若甲、乙、丙三人通过考试的概率分别为
、
、
,则事件“三人中恰有两人通过考试”发生的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-06-14更新
|
1004次组卷
|
2卷引用:天津外国语大学附属外国语学校2020-2021学年高二下学期期末数学试题
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6 . 已知等边△ABC的边长为
,三个动点D、E、F分别在线段BC、AC、AB上(包含端点),动点M在△ABC的外接圆上,且满足:
,
,
,其中
,
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70c3b5763a0226f1aa907828ea7bf44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a93a1c510ae628794eb9a90362b9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668a1dd51b1ef1749c75007fbf45e923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cefeddff52b02a43831beeb4bb6faa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cfcb9b3fc83f8c01e0db6d3d71ca5da.png)
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解题方法
7 . 若锐角
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa01504577b2b3520c86507599f76428.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b291445e61f53061200d5d0d31f678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa01504577b2b3520c86507599f76428.png)
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8 . 已知两点
,
,则以线段
为直径的圆的标准方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e7e22582bd74786e015c27494979cc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16542f22b00b2918566d872852331b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
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9 . 在等比数列
中,若
,
,则公比
的值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0748c346ed88f98e424de8edf278325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.![]() | B.![]() | C.2 | D.4 |
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2023-01-05更新
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3卷引用:天津市河北区2022-2023学年高二上学期期末数学试题
解题方法
10 . 若双曲线
与椭圆
有公共焦点,且离心率
,则双曲线
的标准方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd45c807c5b4278b917b69b4975cfb4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf225b4a29dc973d00c0d0dd76b45288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-05更新
|
308次组卷
|
2卷引用:天津市河北区2022-2023学年高二上学期期末数学试题