It involves much more than that.
I suggest you try google, where you can find full explanations.
Explain the notation M^-1 used for the inverse of a square matrix M.
I thought M^-1 would be a normal inverse matrix except the numbers would be vertically switched like in fractions...? Not sure though.
2 answers
If M is 2x2 with all ones, and N is 2x2 with all one-half, M times N will not give the identity matrix.
1 answer