If A is a [img=40x20]180348ee73f28ea.png[/img] matrix , [img=124x21]180348ee7d54af8.png[/img], then A must be singular
举一反三
- If A is a [img=40x20]1803c4e438d5e6e.png[/img] matrix and [img=141x21]1803c4e44127ce1.png[/img], then A must be singular.
- 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]
- 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]
- If A is a nonsingular [img=36x19]17de932d7252e24.png[/img] matrix, show that[img=35x23]17de932d800355c.png[/img] is ________ and det([img=35x23]17de932d8d1c265.png[/img])=_______. A: nonsingular >;0 B: nonsingular <;0 C: singular >;0 D: singular <;0
- 设f(x)的一个原函数是F(x) ，则[img=108x37]17e4423d9aa227d.jpg[/img]（ ） 未知类型：{'options': ['F(ax＋b)＋c', ' aF(ax+b)+c', ' [img=88x35]17e4423da4dc314.jpg[/img]', ' [img=97x33]17e4423dafb1816.jpg[/img]'], 'type': 102}