what is the inverse of a 3x3 matrix?

sounds complicating. well at least ive seen another benefit of signing up: looking at the future of math class

If you have a 3x3 matrix, A, say, its inverse is another 3x3 matrix which, when multiplied by A results in a 3x3 matrix that has zeros everywhere except on the main diagonal (top-left to bottom right) where the numbers are 1.

For example:

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WHOA!!! what grade do i learn that?

Possibly in your senior year, but I'm not familiar enough with what you learn when to say for certain.  Perhaps there is someone else in the forum who has learned about matrices recently who could give you a more definitive answer.

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