设方阵A ,B满足AB=aA+bB,ab为常数切ab不等于0 证明AB=BA
设方阵A ,B满足AB=aA+bB,ab为常数切ab不等于0 证明AB=BA
设n阶矩阵A,B满足AB=aA+bB.其中ab不等于0,证明AB=BA.
设A,B是n阶方阵,满足AB=A-B,证明AB=BA
方阵A,B满足A+B=AB 证明A,B可交换,即AB=BA
A.B为n阶方阵且A+B+AB=0,证明AB=BA?
设A,B都是n阶方阵,且|A|不等于0,证明AB与BA相似.
设A,B为同阶方阵,证明|AB|=|BA|
方阵性质证明问题设AB为n阶方阵,证明|AB|=|A||B|
a/b=2,求(aa-ab+bb)/(aa+bb)
(a+b)(aa-ab+bb)=?
已知矩阵A,B满足AB=BA,证明:A,B是同级方阵
设n阶方阵 A B 满足AB=BA ,(A+B)^3=0,且B可逆,证明A 可逆.