matrix multiplication, A={{1,2},{3,4}} B ={{5,6},{7,8}}
19 22
43 50
transpose a first
26 30
38 44
transpose b first
17 23
39 53
transpose both matrices first
23 31
34 46
multiply by 0.5
 9.5 11
21.5 25
multiply by 1.5 by using previous result
28.5 33
64.5 75
matrix multiplication, A={{1,2},{3,4}} B={{5,6,7},{8,9,10}}
21 24 27
47 54 61
matrix multiplication, A={{5,8},{6,9},{7,10}} B={{1,2},{3,4}}
29 42
33 48
37 54
check error when matrix sizes don't match
