1. The problem statement, all variables and given/known data A binary operation is defined by: the set of 2 x 2 matrices with real entries under matrix multiplication. Find the identity element and the inverse. 2. Relevant equations identity element: a[tex]\o[/tex]e=e[tex]\o[/tex]a=a inverse: a[tex]\o[/tex]b=b[tex]\o[/tex]a=e 3. The attempt at a solution I think that the identity element is a 2 x 2 matrix of zeroes with 1's along the diagonal. but how do i find the inverse b? Thank you.