for example
a=[1:1:3] % Row vector using your strange syntax.
b=[3:1:5] % Another row vector.
c1 = a' * b % Note transpose operator '
a =
1 2 3
b =
3 4 5
c1 =
3 4 5
6 8 10
9 12 15
this is fin when when a and b is a 1x3 vector, but what do you do when a=1 2 3 4 and b =2 3 4 5 6 7 8?