1 . 在平面直角坐标系
中,利用公式
①(其中
,
,
,
为常数),将点
变换为点
的坐标,我们称该变换为线性变换,也称①为坐标变换公式,该变换公式①可由
,
,
,
组成的正方形数表
唯一确定,我们将
称为二阶矩阵,矩阵通常用大写英文字母
,
,…表示.
中,将点
绕原点
按逆时针旋转
得到点
(到原点距离不变),求点
的坐标;
(2)如图,在平面直角坐标系
中,将点
绕原点
按逆时针旋转
角得到点
(到原点距离不变),求坐标变换公式及对应的二阶矩阵;
(3)向量
(称为行向量形式),也可以写成
,这种形式的向量称为列向量,线性变换坐标公式①可以表示为:
,则称
是二阶矩阵
与向量
的乘积,设
是一个二阶矩阵,
,
是平面上的任意两个向量,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6e18ee381b4e43352acb377fdb4bf0.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ee82573986d4fa6a7ee1b5f397edae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0859290725efef72a1b04f473d07da6e.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c84c4a85e9f31e35bc48c15d9873a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c84c4a85e9f31e35bc48c15d9873a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39822cb6df5463c27ac9bfed261a2ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/762bfc20a2da28b3c59225851ea40036.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/762bfc20a2da28b3c59225851ea40036.png)
(2)如图,在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ee82573986d4fa6a7ee1b5f397edae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0859290725efef72a1b04f473d07da6e.png)
(3)向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4224bf1cbcd51f4cbdce93d981d65c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c17f1f4912527319e32f60e7523c65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26b9e508047e76f3a7ad88d587702ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd47bfcd685d2466ee27c01bf286406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c84c4a85e9f31e35bc48c15d9873a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c17f1f4912527319e32f60e7523c65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7a1df960feef63dec4790d63f52279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595e7e1d74355ac82dcfc16b3e86cf78.png)
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2024-04-12更新
|
1911次组卷
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6卷引用:模块五 专题5 全真拔高模拟1(苏教版期中研习高一)
(已下线)模块五 专题5 全真拔高模拟1(苏教版期中研习高一)(已下线)模块五 专题5 全真拔高模拟1(高一人教B版期中)安徽省皖江名校联盟2024届高三下学期4月模拟数学试题(已下线)数学(新高考卷02,新题型结构)(已下线)压轴题02圆锥曲线压轴题17题型汇总-1湖南省湘楚名校2023-2024学年高二下学期5月月考数学试题
名校
2 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2529bbe0a807b878a34b3deb435edd0.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f461795a1b2155ed2fe724dbf4ec6ca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2529bbe0a807b878a34b3deb435edd0.png)
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名校
3 . 已知矩阵
,向量
.求向量
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c158ff44155e18b022b851c6aea6b598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ec9538b8a3bbc7c2ee35828e1e4854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fd976a35474c8329558ecb6a00f691.png)
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2020-03-26更新
|
77次组卷
|
2卷引用:江苏省南通市西亭高级中学2019-2020学年高三下学期学情调研数学试题
4 . 已知矩阵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f73771ccf40e99fc7422e0d733e8e9.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696fcb7889c039ed4867292cd83544c3.png)
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9bee7a3e6a2c01e3196fd1dbe40cb4.png)
(1)求实数
;
(2)求矩阵
的特征值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f73771ccf40e99fc7422e0d733e8e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ebe6fdff5e34e0a10766cd684597c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696fcb7889c039ed4867292cd83544c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c5baf234d46468624124fd25b4940c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9bee7a3e6a2c01e3196fd1dbe40cb4.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求矩阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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2020-03-09更新
|
129次组卷
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2卷引用:2020届江苏省沭阳县高三上学期期中调研测试数学试题
5 . 已知向量
是矩阵
的属于特征值
的一个特征向量.
(1)求实数
,
的值;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69599a28fa84489933e2e6466f5f2432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd335e6e2a9c0095de02dd1ca351f04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a335fc7c2c46946f0bf908c78bcc46fa.png)
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2019-12-03更新
|
144次组卷
|
2卷引用:江苏省扬州市2019-2020学年高三上学期期中数学试题
名校
6 . 已知矩阵
,求矩阵
的特征值及其相应的特征向量.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7134d21e829441b2076341e9d513942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2019-11-21更新
|
82次组卷
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2卷引用:江苏省淮安市盱眙县马坝高级中学2019-2020学年高三上学期期中数学(理)试题
名校
7 . (1)求直线
在矩阵
对应变换作用下的直线
的方程;
(2)在平面直角坐标系
中,已知曲线
以原点
为极点,
轴正半轴为极轴建立极坐标系,直线
的极坐标方程为
,求曲线C与直线
交点的极坐标
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3497af3942a788b64c6b91b62a8dbf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa45db9428d394978d768202c1a9b8da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e74ba117b3792808db5c48ff705907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aafbe53daa177ad45d6d2cc82351e53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de12bdc1fd51df0f2d247690096a1240.png)
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8 . 已知矩阵
,若矩阵C满足
,则矩阵C的所有特征值之和为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23a701ee8748bea479789b496262733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc03f918e5d50b2d1d2456dcb2bdc11.png)
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2019-09-12更新
|
105次组卷
|
2卷引用:江苏省无锡市天一中学2018-2019学年高一下学期期中考试数学(平行班)试题
名校
9 . 已知矩阵A=
,A的一个特征值λ=2,其对应的一个特征向量是α1=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96e53014f1f2acf12d1e3d98eed65b9.png)
(1) 求矩阵A;
(2) 设直线l在矩阵A-1对应的变换作用下得到了直线m:x-y=4,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74cf3611ec6907347ecf918599cd525f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96e53014f1f2acf12d1e3d98eed65b9.png)
(1) 求矩阵A;
(2) 设直线l在矩阵A-1对应的变换作用下得到了直线m:x-y=4,求直线l的方程.
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10 . 已知直线l:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a9b769d70cb6f29e965c800921c8ea.png)
(1)矩阵A=
所对应的变换将直线l变换为自身,求a的值;
(2)若一条曲线C在关于直线l的反射变换下变为曲线C′:
,求此反射变换所对应的矩阵B,并求出曲线C的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a9b769d70cb6f29e965c800921c8ea.png)
(1)矩阵A=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/830b9f23782e11447f567760c4a1a2c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c79c23bb0fbba11cc94b17eccb2335.png)
(2)若一条曲线C在关于直线l的反射变换下变为曲线C′:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377a2333ff8c63cbdb20b882d6d5a7ec.png)
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