How can I multiply two different length vectors using for loops in Matlab ?

ie. [1 2 3] and [1 2] The results should be a vector [3 6 9]. That is (1x1)+(1x2)=3, (1x2)+(2x2)=6,(1x3)+(2x3)=9. Appreciate the help

Answer 1

[Jan]

A = [1 2 3] 
B = [1 2] 
C = sum(B.' * A, 1)