解题方法
1 . 已知正三棱锥
的底面边长为2,
,
,
中点分别为D,E,则直线
、
的夹角为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b4c1ae9c57d51e27bbdb001122d3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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2 . 已知函数
,
,
的最小值为3,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1e013573390ee9a44cfc3b0fc4baa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2021-09-11更新
|
425次组卷
|
2卷引用:广西2022届高三上学期开学联考数学(理)试题
解题方法
3 . 设
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1fd39d2a504dcbbffa261183faa45b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fc8864e8efe54bcff8a49a6d5ef66b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 函数
,
(1)讨论
的单调性;
(2)是否存在
,使
的不同零点个数为2,且零点
,
满足:
?存在则求出
的值,不存在,则说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e022150f15d2ea5f24463a66cb324821.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37ff6c1be6b856923c2f757cdb0ef77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d64d465425b9be3cadfe4533b5254df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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5 . 已知数列
中,
,
,
,
(1)求
的通项公式;
(2)设
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f3b5d519217949671fd339780406b3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554b0f09b062a7a747b1c814ce2385be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd08a1fb5ead4ec8b4974466088d3022.png)
您最近一年使用:0次
2021-09-11更新
|
591次组卷
|
6卷引用:广西2022届高三上学期开学联考数学(理)试题
广西2022届高三上学期开学联考数学(理)试题四川省泸县第四中学2022-2023学年高三下学期开学考试数学(文)试题四川省泸县第四中学2022-2023学年高三下学期开学考试数学(理)试题江苏省镇江市句容碧桂园学校2022-2023学年高三下学期期初模拟数学试题山东省青岛市青岛第二中学2022-2023学年高三上学期期末数学试题(已下线)山东省青岛第二中学2022-2023学年高三上学期1月期末测试数学试题变式题17-22
6 . 设双曲线
其右焦点为F,过F的直线与双曲线C的右支交于A、B两点,
(1)若直线
与
轴不垂直,求直线的斜率的取值范围;
(2)求
中点的轨迹坐标方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a218602e8e3a52f74f760059aa7014.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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7 . 已知函数
,函数
,若
,
恰有两个零点,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e46123bc4d1e3d54a0363409a99ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bec3b287187901862f5c94827785dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8bfb563f79688d136e0cb958b5153c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7376dbe3af5f7132e15d0457ac4ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7851b4194834feca592f488aafa672e.png)
您最近一年使用:0次
2021-09-11更新
|
729次组卷
|
6卷引用:广西2022届高三上学期开学联考数学(理)试题
名校
解题方法
8 . 已知
,
是双曲线C的两个焦点,P为双曲线上的一点,且
;则C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ebc941595e54fe7d836d3c295c3cbe.png)
A.1 | B.2 | C.3 | D.4 |
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2021-09-11更新
|
938次组卷
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5卷引用:广西2022届高三上学期开学联考数学(理)试题
广西2022届高三上学期开学联考数学(理)试题(已下线)9.4 双曲线(精讲)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)宁夏六盘山高级中学2021-2022学年高二上学期第二次月考数学(理)试题(已下线)10.4 双曲线(精讲)第3章 圆锥曲线与方程 单元测评
解题方法
9 . 已知在
中,角
,
,
的对边分别为
,
,
,
,
.
(1)求
的值;
(2)若点线段
上的一点
满足
,求
的值.
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd6e3ce2d6633bdefbd565e812c04aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3007843675799e84956a6c49169b55f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
(2)若点线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e2fca8dc4454f19da64d6a8137feb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4916262b8025f0ef8935c0f45804b350.png)
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10 .
展开式中常数项是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c6ba325464bb863ba2baaf52d4e8a7.png)
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