A是[img=40x20]1803263634e9006.png[/img]矩阵,AB是[img=40x20]180326363e1a996.png[/img]的矩阵,则B的维数是多少?
A: [img=40x20]18032636461f424.png[/img]
B: [img=40x20]180326364f0422f.png[/img]
C: [img=40x20]1803263657d7ed1.png[/img]
D: [img=40x20]180326365fe606e.png[/img]
A: [img=40x20]18032636461f424.png[/img]
B: [img=40x20]180326364f0422f.png[/img]
C: [img=40x20]1803263657d7ed1.png[/img]
D: [img=40x20]180326365fe606e.png[/img]
举一反三
- A是[img=40x20]1803263634e9006.png[/img]矩阵,AB是[img=40x20]180326363e1a996.png[/img]的矩阵,则B的维数是多少? 未知类型:{'options': ['', '', '', ''], 'type': 102}
- 给定矩阵A,B,X满足AX = B,其中[img=122x51]18032ff5dca90ff.png[/img],[img=132x51]18032ff5e4b6a93.png[/img],则其中X应为____矩阵,且X的第一列[img=19x17]18032ff5ee0f7f2.png[/img]应满足___________. A: [img=40x20]18032ff5f660e53.png[/img],[img=103x51]18032ff603d1926.png[/img] B: [img=40x20]18032ff60c84a93.png[/img],[img=103x51]18032ff603d1926.png[/img] C: [img=40x20]18032ff5f660e53.png[/img],[img=139x25]18032ff629d0d06.png[/img] D: [img=40x20]18032ff60c84a93.png[/img],[img=139x25]18032ff629d0d06.png[/img]
- 设有两个矩阵,[img=14x19]18031b6056783b9.png[/img]为[img=40x20]18031b605e91169.png[/img]维, [img=14x19]18031b6066d2e40.png[/img]为[img=40x20]18031b606f4b5fd.png[/img]维,则两个矩阵相乘之后的维数是 A: [img=40x20]18031b607786539.png[/img]维 B: [img=40x20]18031b607f8988b.png[/img]维 C: [img=40x20]18031b60872d4a6.png[/img]维 D: [img=40x20]18031b608f81805.png[/img]维
- If a matrix A is[img=40x20]1803b6ad35c48eb.png[/img]and the product AB is [img=40x20]1803b6ad3db03d2.png[/img], what is the size of B? A: [img=40x20]1803b6ad44dbaf6.png[/img] B: [img=40x20]1803b6ad4caf12b.png[/img] C: [img=40x20]1803b6ad55045e2.png[/img] D: [img=40x20]1803b6ad5caea53.png[/img]
- 3个4维列向量组按列可构成一个( )矩阵 A: [img=40x20]180329a689a3d1d.png[/img] B: [img=40x20]180329a691dbb26.png[/img] C: [img=40x20]180329a699eccf9.png[/img] D: [img=40x20]180329a6a23a8a5.png[/img]