1 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c087565d8eab2b0914d7e0405618afad.png)
A.![]() |
B.![]() |
C.不等式![]() ![]() |
D.对任意![]() |
您最近一年使用:0次
2 . 已知正三棱锥
的四个顶点均在球
的表面上,若正三棱锥
的体积为
,则球
的体积的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
3 . 已知函数
的部分图象如图所示,则图中矩形(阴影部分)的面积为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ca1100b456583c791b802ea0b12cda.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/0239b1e2-a359-43b9-9353-4a1660838c47.png?resizew=164)
您最近一年使用:0次
解题方法
4 . 若双曲线
的右焦点
到其渐近线
的距离为
,则
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f7fbfa2214ca72495a993b2fed8b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 已知向量
,若
不共线,
是
的平分线,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63443e034ac5c31065e63599a9a28272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97036d042d7e0a7ccc4190368dc22b70.png)
A.![]() | B.![]() | C.2 | D.3 |
您最近一年使用:0次
解题方法
6 . 已知抛物线
经过点
和
,过点
作直线
的垂线,垂足为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/818eb485414c5c5f30c15956f4805025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6027b342e8128f241c542f273e51ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
A.![]() ![]() | B.直线![]() ![]() |
C.![]() | D.![]() |
您最近一年使用:0次
7 . 已知集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629f5fc15f06110587748c896827d6e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 已知
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515e3051dc31e8c1acbcdcc662b78e7f.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
9 . 如图,四棱台
的上、下底面均为正方形,
平面
.
(1)证明:
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efe349888317106ed511076fded08008.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/942b7cbe-27f0-411a-8f79-96f4408e6955.png?resizew=165)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2bf9ef324f1289e205e29fed105c38e.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2e84d6e368f8368f8301c4cd66d6dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f664c0db517bec6886ff0b6100fd474.png)
您最近一年使用:0次
10 . 若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895784697653b457df07987fed7e60b6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次