Question 924406: Evaluate AB if possible.
http://my.thinkwell.com/questionbank/94001-95000/94774/img/237347.jpg Answer by Theo(13342) (Show Source):
You can put this solution on YOUR website! AB looks like 3x3 matrix * 2x3 matrix.
the number of columns in the first matrix doesn't equal the number of rows in the second matrix so they can't be multiplied together.
the rule is;
AB is valid if number of columns in A equals number of rows in B.
the output will be number of rows in A by number of columns in B.
