Matrices

Attachment 18993

thanks

Find $\displaystyle A^{-1}$.

You should note that $\displaystyle A^{-1}AB = IB = B$.

I can't find the inverse of 3 by 3 matrices.. i'd appreciate it if yo showed me how..

Quote:

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Originally Posted by Oasis1993

I can't find the inverse of 3 by 3 matrices.. i'd appreciate it if yo showed me how..

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You can't because you haven't been taught (in which case I suggest that you use Google to research the matter)?

Or you can't because you don't know how to apply what you have been taught (in which case please show what you can do and state specifically where you are stuck)?