-3 -1 8 -8       -5 1 -6 5       4 -9 -2 7

$\displaystyle \cdot$

-7 9 -3       5 -9 4       10 -8 -4       -6 6 -5

Use the matrix multiplication above to show how to find element 2,1 of the product.



NOTE: Use parenthesis around all number to show multiplication!