I've A^-1 = - A What is A

I've figured that A^2= -I but what's then?

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- Jan 14th 2012, 12:43 PMahmedzoro10Matrix inversion problem
I've A^-1 = - A What is A

I've figured that A^2= -I but what's then? - Jan 14th 2012, 12:55 PMalexmahoneRe: Matrix inversion problem
- Jan 14th 2012, 01:05 PMOpalgRe: Matrix inversion problem
- Jan 14th 2012, 01:12 PMahmedzoro10Re: Matrix inversion problem
How did you get this one?

- Jan 14th 2012, 01:29 PMalexmahoneRe: Matrix inversion problem
- Jan 14th 2012, 01:32 PMalexmahoneRe: Matrix inversion problem
- Jan 15th 2012, 11:27 AMHallsofIvyRe: Matrix inversion problem
Let . Then . So we must have , , , and . You might try things like taking b (or c) equal to 0 or not equal to 0 and see what you get.