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#1 2007-10-11 00:48:52
- freddogtgj
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- Registered: 2006-12-02
- Posts: 54
Linear Algebra- Square matrices
I have this question that's causing some confusion:
Let A and B be square matrices of the same size. Show that
(A+B)(A-B)=A²-B²
if and only if A and B commute.
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#2 2007-10-11 01:06:44
- JaneFairfax
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- Registered: 2007-02-23
- Posts: 6,868
Re: Linear Algebra- Square matrices
Last edited by JaneFairfax (2007-10-11 01:08:30)
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#3 2007-10-11 02:57:32
- freddogtgj
- Member
- Registered: 2006-12-02
- Posts: 54
Re: Linear Algebra- Square matrices
Thanks appreciate it!
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