Two matrices comparison

%I have two matrices, a=[1 2 3]; b=[0 1 0]; %How can i get a1=a if b=1 and a1=0 if b=0, So that a1=[0 2 0]?Thanks!

Answer 1

[Ellen]

a1=a.*b;

the dot before the multiplication sign makes sure the multiplication is done elment by element, so a1(1)=a(1)*b(1)......