1 . 已知
,且
.
(1)求
,
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1eca7f8e63042b1c98badc0d9e36af1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353b4f6ed38b5bd83d2f0fa64d686cef.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc8c56d09485b718a85ed23f637e2d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a86df8b3934891c1d2e9016f6c4477.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15d37ff33a395f8d35659abf4a34f0f.png)
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2 . 长方体的一个顶点上的三条棱长分别为3,4,5,且它的8个顶点都在同一个球面上,则这个球的表面积为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 袋子中有5个大小质地完全相同的球,其中2个红球,3个黄球,从中不放回地依次随机摸出2个球,则两次都摸到红球的概率为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 函数
的定义域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe77cb674c853495235cfba905cb8cab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-08-14更新
|
695次组卷
|
3卷引用:2023年天津市河北区普通高中学业水平合格性考试模拟数学试题
解题方法
5 . 已知向量
,
,
,且
,
.
(1)求向量
与
的坐标;
(2)若
,
,求向量
与
的夹角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f4dcf415977dea53f52a85b6b82136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f514c8e97f9c4e51928015a1be009c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47931cb4157d6ccd9d129c32fafdf087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f3e5dd4c8dbf61a7673f33d61396ac.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21f9f9c6ae2d41b39849f5c74cbb09c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd6e6acf6a2e819ae9ecd95934414c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37564ec4e9e92485f1769e8ffaac31d.png)
您最近一年使用:0次
2023-08-14更新
|
463次组卷
|
2卷引用:2023年天津市河北区普通高中学业水平合格性考试模拟数学试题
名校
解题方法
6 . 设
,
,
,则
,
,
的大小关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cfb81c38b72243f14c9d510f5414a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72a48c74eecec6ff567bcf1c31acf35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a977d5809ff7d6028f494fec4e559b02.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)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-08-14更新
|
824次组卷
|
3卷引用:2023年天津市河北区普通高中学业水平合格性考试模拟数学试题
7 . 如图,已知正方体
.
(1)求证:
平面
;
(2)求证:
平面
;
(3)求直线
与平面
所成的角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/14/cf65a4ed-de73-452e-8d73-017b6d9591f4.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fdb2b9d6a4a54ed1328c5b3adcf7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231673dd67ab79d3c5da73904ceade1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
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名校
8 . i是虚数单位,则复数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8141796a8ba05dc793dcb353f3bca2.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8141796a8ba05dc793dcb353f3bca2.png)
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2023-08-14更新
|
442次组卷
|
2卷引用:2023年天津市河北区普通高中学业水平合格性考试模拟数学试题
9 . 已知空间三条直线
,
,
.若
,
,则( )
![](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/057cdb4057bca398a838e868efd360f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2293799d379200cf746e8450ebd5744f.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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10 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67e71252c257881b6f2ca19701982d34.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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