Hi!
Please help me solve:
Suppose that A and B are mxn matrices
(i)Using dimension thm(or otherwise)show that Null(A)=R^n if and only if A=0
ii)Using (i)(or otherwise)prove that A=B if and only if Ax=Bx for all x is an element of R^n
Thanks.
Hi!
Please help me solve:
Suppose that A and B are mxn matrices
(i)Using dimension thm(or otherwise)show that Null(A)=R^n if and only if A=0
ii)Using (i)(or otherwise)prove that A=B if and only if Ax=Bx for all x is an element of R^n
Thanks.