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yes

so, what is it?

hehe, don't leave us in suspense :P

So how do you find the inverse of that matrix

well, let's find the DETERMINANT first, can you find the determinant of that 2x2 matrix?

read it,at the middle page http://www.mathsisfun.com/algebra/matrix-inverse.html

@douglas12
If you are allowed to use technology in your work, check out the online matrix inverse calculator at
http://www.bluebit.gr/matrix-calculator/

@douglas12 Post what you get as the inverse.