1 . 满足方程
的实数解![](https://img.xkw.com/dksih/QBM/2020/1/6/2371472891535360/2371792347095041/STEM/ce5ca6d3965142e596aeb5529b1fac91.png?resizew=4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631a64f3fd92d8556ea0dbb087189cbd.png)
![](https://img.xkw.com/dksih/QBM/2020/1/6/2371472891535360/2371792347095041/STEM/ce5ca6d3965142e596aeb5529b1fac91.png?resizew=4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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2 . 定义平面向量之间的一种运算“
”如下:对任意的
,
,
,有下列说法:① 若
与
垂直,则
;②
;③ 对任意的
,有
;④
;正确的是________ (写出所有正确的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fd94e5c210921dfbe11796b1fc97cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898fd10efa9e4c8e9a3af5d21ae34397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0eeb35c1b1071619314f02396bc1d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e61bec06f9ca1ad8cfd906ec3a6e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf57a52c99cc0cf6e802c6c1532a4352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf258e34da2dc7e33b63cb82b01dbec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e87088da41685cc8d433fbbe0e18d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1f0d05fc69edbf6d23e925633e2ef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02fd90727b21d64206bf44d937458ca8.png)
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3 . 已知直线
与直线
,记
,则D=0是直线
与直线
平行的__________ (选填“充分非必要”、“必要非充分”、“充要”、“既非充分又非必要”)条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e66c7b2bdf9c904e85bc1817abe46d9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eed40c6ae76efc7c1f53fc9f0778856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7519aca5055fe8f55944c4c2f483a4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4cf9710b2c7d0eddad3e7e318568f53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
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2020-01-01更新
|
256次组卷
|
3卷引用:上海市青浦高级中学2018-2019学年高三上学期9月质量检测数学试题
上海市青浦高级中学2018-2019学年高三上学期9月质量检测数学试题上海市金山中学2020-2021学年高二下学期第一次月考数学试题(已下线)模块11 坐标平面上的直线-2022年高考数学一轮复习小题多维练(上海专用)
4 . 设集合
共有6个元素,用这全部的6个元素组成的不同矩阵的个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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2019-12-31更新
|
412次组卷
|
4卷引用:上海市静安区2019-2020学年高三上学期期末数学试题
上海市静安区2019-2020学年高三上学期期末数学试题2020届上海市静安区高三一模(期末)数学试题(已下线)课时28 矩阵的概念及运算-2022年高考数学一轮复习小题多维练(上海专用)(已下线)第六章 计数原理 全章总结 (精讲)(2)
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5 . 记矩阵
中的第
行第
列上的元素为
,现对矩阵
中的元素按如下算法所示的步骤作变动(直到不能变动为止):若
,则
,
,
,若
,则不变动,这样得到矩阵B,再对矩阵B中的元素按如下算法所示的步骤作变动(直到不能变动为止):若
,则
,
,
;若
,则不变动,这样得到矩阵
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48eb09621051c6101b6ebc2f8d77f777.png)
________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1554030b5baddb5ad1781182c9533b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c638df393a08f32f1a8df9b0d3fad0c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32769c25de74118c6f4d76142b477d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58febdb3466186d4309c27a339ecf93a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7c56f9de78c5a411701afc60e6bc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa646d57418a47028b434d534c13c0b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7b867c9f2512ec3963b65e01d89f5a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6815cfb3b8b564666a5d0dd98a5c3df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c611c28c5dcadca6da08a2ff995dd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb9015ced7d6802981495be04fe7014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727afb3d23222e0afeef8028756c6cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02ad0deaf9e5550c4cebfdbe9be4818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48eb09621051c6101b6ebc2f8d77f777.png)
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6 . 若存在正数
使
成立,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c4eda93081f48d2f7cab467444fbde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 若矩阵
满足:
,
,
,
且
,则这样互不相等的矩阵共有________ 个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07721eecee2b06bd54eba4729d326545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e84c30444f13d37ada78285dc4f83b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e76d1d8e50dda4d50229a8a20c57e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc29ee719feeedfbc8c529cf11348abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5fe8a074fbc96d0a2f4c8803ae729b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac1ea08b05f97026a714c01a95f7e59.png)
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2019-12-10更新
|
73次组卷
|
2卷引用:上海市上师大附中2018-2019学年高二上学期期中数学试题
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8 . 已知
,其中
,若
为偶函数,则
=_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2026638a0dce9153c5c41e02f91614bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281805b9dfe2162215dfe6b5ad6d7b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864e8c398d9d55cadd83aa642b6a3d6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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9 . 在行列式
中,第3行第2列的元素的代数余子式记作
,则
的零点是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/962bbfa14818719f3eca407903db19e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca6fb42936ab04742e1c38c1cf468494.png)
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2019-12-09更新
|
165次组卷
|
3卷引用:2019年上海市杨浦区高三上学期期末质量调研数学试题
10 . 已知直线
过点
,则行列式
的值为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f3229bce299cb5239d1e26e570b874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe8803bc5d850ec2a6f15bcdb12c896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8701c21fa9fb0525f719f0dffafc7c.png)
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