相关题目
29、设A是 INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/111984" ＼* MERGEFORMATINET 
矩阵, INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/23856" ＼* MERGEFORMATINET 
有解,则( )
(1.0)
28、设 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/03dc2fa866de121c60079e7c3c0c1ec8.png" ＼* MERGEFORMATINET 
为齐次线性方程组 INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/181683" ＼* MERGEFORMATINET 
的解, INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/0ec1c289289586c124842686f7b692a5.png" ＼* MERGEFORMATINET 
为非齐次线性方程组 INCLUDEPICTURE ＼d "http://mooc1-2.chaoxing.com/ananas/latex/p/23856" ＼* MERGEFORMATINET 
的解,则( )
(1.0)
27、下列说法正确的是( )
(1.0)
26、某线性方程组的增广矩阵已经由行变换化为以下形式.
25、将坐标处理成列向量的形式,则绕原点逆时针旋转θ,则旋转矩阵 INCLUDEPICTURE ＼d "http://p.ananas.chaoxing.com/star3/origin/7306824af62074b8f1c82f4ed362cce4.png" ＼* MERGEFORMATINET 
中的b为( )
(1.0)
24、给出下列命题:
①零向量的长度为零,方向是任意的;
②如a,b都是单位向量,则a=b;
③向量AB与BA相等。
则所有正确命题是( )
(1.0)
23、下列说法不正确的是( )
(1.0)
22、向量 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/73357b760f571c259794ef21e9f7b9ef.png" ＼* MERGEFORMATINET 
先逆时针旋转 INCLUDEPICTURE ＼d "http://mooc1-api.chaoxing.com/ananas/latex/p/29250" ＼* MERGEFORMATINET 
,再顺时针旋转 INCLUDEPICTURE ＼d "http://mooc1-api.chaoxing.com/ananas/latex/p/463231" ＼* MERGEFORMATINET 
得到的向量为( )
(1.0)
21、下列线性变换中(不会)使正方形变为其他图形的是( )
(1.0)
20、点通过矩阵 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/77cfeea72c7c2277b32e0dc0267f1377.png" ＼* MERGEFORMATINET 
和 INCLUDEPICTURE ＼d "https://p.ananas.chaoxing.com/star3/origin/73a9947e3388336d31daf01af0b631f0.png" ＼* MERGEFORMATINET 
的变换效果相当于另一变换是( )
(1.0)
