真题
解题方法
1 . 已知函数
的定义域为R,定义集合
,在使得
的所有
中,下列成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff42ff0e772a602981c54616134a52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98d299979423e5ae74b618b07d10c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
A.存在![]() | B.存在![]() ![]() |
C.存在![]() | D.存在![]() ![]() |
您最近一年使用:0次
真题
2 . 定义一个集合
,集合中的元素是空间内的点集,任取
,存在不全为0的实数
,使得
.已知
,则
的充分条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b35f6fb648951da2a58b8f7f0b1873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096820d860ddf8f3155bf36f5fded491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef3082f30bdeb19124814eacce2ac58f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70219b67f6352be3d0a0400bde89d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f0e65d0421529cf42d98794b027e82.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 已知正三角形ABC的边长为4,D是BC边上的动点(含端点),则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccc2805e3ec68aa0741c62d902cf8a3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
4 . 从某个角度观察篮球(如图1)可以得到一个对称的平面图形(如图2),篮球的外轮廓为圆
,将篮球的表面粘合线视为坐标轴和双曲线,若坐标轴和双曲线与圆
的交点将圆的周长
等分,且
,则该双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d363b57e9e494641bb3c2a8048becd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 已知
,则与向量
共面的向量是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d86dd2fdc76d17472b79523fce1dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
6 . 已知
为虚数单位,复数
满足
.则
取最大值时,在复平面上以
对应的点,
为顶点的三角形的形状是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70c2519610d6d1d6d0855b0f27dfc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5dc5e2140d9f46773c980a8698f4f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcfebd9f5a57036e6df6b6e14865da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de1e68a8b84c7062f763dd06beef5383.png)
A.等边三角形 | B.直角三角形 |
C.钝角三角形 | D.等腰三角形 |
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名校
解题方法
7 . 在
中,角A、B、C的对边分别为a、b、c,若
且
,则
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a909bc3d298d36d21b18644fdff89a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7098e7fdd9d6f543265b359a1f038d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.等边三角形 | B.顶角为![]() |
C.等腰直角三角形 | D.非直角三角形,也非等腰三角形 |
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名校
8 . 已知直线
与椭圆
,点
分别为椭圆
的左右焦点,直线
,
,垂足分别为点
(
不重合),那么“直线
与椭圆
相切”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c8377df6ca3008270ea82927c3b5a34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e39d0edf40348fcd8f68554c78352f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b07ac8fe3821c440bdd0507f6fd6f763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c981ed835de794152b1f0f8fcf6b70e.png)
A.充分非必要 | B.必要非充分 |
C.充分必要 | D.既非充分又非必要 |
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23-24高一下·上海·期末
解题方法
9 . 已知在
中,
是边
上的一个定点,满足
,且对于边
上任意一点
,恒有
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559d44b68815f80f4e8a8a2655073510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1cdd39367b92b45d53b54390fa8d214.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
10 . 已知函数
为偶函数,若
,则a不可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8804c29cde53b555485dc37f28eef1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731bdc8d2686a05f12a2ba8a7e3b01be.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次