Matrix A= 2x2, R1= -1, -1, R2= -7, 3(adsbygoogle = window.adsbygoogle || []).push({});

Matrix b= 2x2, R1= 1,0, R2= 0, 1

A*?=b

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To solve, I put ? on the one side of the equation as ?=A^(-1)b. My answer is then just the inverse of A, because what is multiplied by the identity matrix is itself. It is shown to be incorrect.

?=2x2, R1= -3, -1, R2= -7, -1

Please help! I would like this to become more intuitive.

Also, is there a way to format matrices on the forum?

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# Homework Help: A matrix multiplied by it's inverse is the identity matrix, right?

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