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k取什么值时AB=BA?( )
学科：线性代数
时间：2024-06-25 07:34:50
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题目1单选题
设<img src="https://tihai-oss-cloud.itihey.com/img/cfc28ef155504f204dc3b6ee1a2c9c13.webp">,<img src="https://tihai-oss-cloud.itihey.com/img/14e34798262bcd0d6d2935022ec31eae.webp">,若A=-B,则( )A. x=2,y=7,z=5B. x=-4,y=-5,z=-5C. x=-4,y=-5,z=5D. x=2,y=-5,z=5
题目2单选题
已知<img src="https://tihai-oss-cloud.itihey.com/img/9aa570b468d7625bc13063b260809cf9.webp">满足AB=BA,则a,b的值分别为( )A. a=12,b=10B. a=5,b=11C. a=11,b=0D. a=5,b=7
题目3单选题
设<img src="https://tihai-oss-cloud.itihey.com/img/06523c89fbbccd10f9f7af2198597112.webp">则ABA-AB=( )A. <img src="https://tihai-oss-cloud.itihey.com/img/8c85bbd9e1194af4f294ee1851309205.webp">B. <img src="https://tihai-oss-cloud.itihey.com/img/abffa831e2454874c98d97583bd3c572.webp">C. <img src="https://tihai-oss-cloud.itihey.com/img/3b73e28695803227cb7882aa2662631b.webp">D. <img src="https://tihai-oss-cloud.itihey.com/img/161ec518bb19b73c48e890ee2d4d754d.webp">
题目4单选题
设A、B均为n阶方阵,且满足<img src="https://tihai-oss-cloud.itihey.com/img/15e39847c0968b700549a1580a6701fa.webp">则必有( )A. <img src="https://tihai-oss-cloud.itihey.com/img/3433ff4103c925aeaac22597f8b29d5e.webp">B. <img src="https://tihai-oss-cloud.itihey.com/img/8d678560703ebbf19f51dde5160658ee.webp">C. <img src="https://tihai-oss-cloud.itihey.com/img/0835a10b18d6ed5cb1e29d7b25589c61.webp">D. <img src="https://tihai-oss-cloud.itihey.com/img/a0d139b7a3f8d4e177b1218e8eaf7b1f.webp">
题目5单选题
如果已知矩阵<img src="https://tihai-oss-cloud.itihey.com/img/48fe584a9e57e3a11a6bc38a0e350c8c.webp">则下列运算结果不为n阶矩阵的是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/4767c0f6ac838855261eb01d6f54e2f9.webp">B. <img src="https://tihai-oss-cloud.itihey.com/img/354b1e39a4ce134cd3400df0cdd6a8c1.webp">C. <img src="https://tihai-oss-cloud.itihey.com/img/714b8bc3e1ac6f409662d0113f74c4a6.webp">D. <img src="https://tihai-oss-cloud.itihey.com/img/a769ea2aff8a62fbb200bd12a0ff519e.webp">
题目6单选题
如果矩阵<img src="https://tihai-oss-cloud.itihey.com/img/fbeef6324853a67d5786dc26c6bc13e4.webp">,则a,b,c,d的值分别为( )A. 2,3,6,-1B. -1,6,3,2C. 1,-6,-3,-1D. -2,3,1,-4
题目7判断题
对于同型矩阵A、B,矩阵A+B才有意义A. 正确B. 错误
题目8判断题
如果<img src="https://tihai-oss-cloud.itihey.com/img/1c11dac883591b69835bf2bb3dac9275.webp">,并且<img src="https://tihai-oss-cloud.itihey.com/img/ae558e48a4f8de6d9394e37c3abbf266.webp">,那么<img src="https://tihai-oss-cloud.itihey.com/img/3e369a697bba0448ee9947f30558950f.webp">A. 正确B. 错误
题目9判断题
设A,B为n阶方阵,则<img src="https://tihai-oss-cloud.itihey.com/img/b6b67b3e72e6ac7136d1ea1444c427f1.webp">A. 正确B. 错误
题目10判断题
设<img src="https://tihai-oss-cloud.itihey.com/img/04a2884274193a9e1d52ad164aa76a8f.webp">则<img src="https://tihai-oss-cloud.itihey.com/img/22975de4c8eb19274b2730ffb98edfe6.webp">A. 正确B. 错误
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