名校
解题方法
1 . 已知i是虚数单位,若
是纯虚数,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28644a1cca43211d069964e4fdda9901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
A.![]() | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
2024-06-08更新
|
330次组卷
|
2卷引用:广西2024届高中毕业班上学期9月摸底检测数学试题
2 . 已知向量
,
,若
,则向量
与
夹角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324ae9aabe9b5d2800807da07b3d0268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de77988a50e7c6ec9ba2026908ade855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3143307ad0ba4a631eac04e814993655.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知等比数列
的前三项和为13,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e2ec4bc6f5648fd14a35adfc3a6f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
A.81 | B.243 | C.27 | D.729 |
您最近一年使用:0次
解题方法
4 . 已知
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d72c2d25e0a42a67d97122a906863bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e6096f2e89af886f2f744367588a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0f8a97ff297c96f4118993483648d6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 曲线
在A点处的切线与直线
垂直,则切线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a07a180c125817aac9cdf0cda20b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943fecc8fa33ccc1dca0b0cb9e908224.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知直线
与抛物线
交于A,B两点,以线段
为直径的圆与抛物线C的准线相切,则p的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c1212804e6d784756d48083d166e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.1 | B.![]() | C.2 | D.4 |
您最近一年使用:0次
名校
7 . 椭圆的上顶点到双曲线
的渐近线的距离为( )
A.![]() | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
2024-03-24更新
|
717次组卷
|
2卷引用:广西百所名校2023-2024学年高二下学期入学联合检测数学试题
名校
解题方法
8 . 已知定义在
上的函数
满足
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969b5d9fac91d60c6da4457419f68771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324286813887f7274192afcc3ab5a896.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-19更新
|
769次组卷
|
3卷引用:广西南宁市第二中学2024届高三下学期开学考试数学试卷
解题方法
9 . 在空间直角坐标系中,已知平面
,
的一个法向量分别为
,
,则
与
的夹角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ccb085ad0285ba92d727279b10f98e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b578762703d8c8d02ddde5888c8b1fb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 若
.则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04ac0b83bc7a0c9d067906c7fc65b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d45c243d18b3c631dc5d7c950b7abe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次