SOLUTION: Multiply matrix {{{(matrix(3,2, 3,1, 3,2, 4,3))}}} by matrix {{{( matrix(2,3, 7,2,1, 6,8,-2))}}}

Question 555189: Multiply matrix by matrix
Answer by Edwin McCravy(20086) (Show Source): You can put this solution on YOUR website!


Here is the formula for multiplying a "3 down by 2 across" matrix 
by a "2 down by 3 across" matrix.  The matrix you get when you 
multiply twn matrices gets its "down dimension" from the first
matrix and its "across dimension" from the second matrix: 

� = 

Use that formula and you'll get this answer, which is "3 down by 3 across":

� = 

Edwin

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