Matrix Multiplication (multiply every row of a matrix to different values)

Dear all,

I am looking for a way to multiply every row of a matrix to different values? Let assume we have:

A=[1, 2, 3; 4, 5, 6; 7, 8, 9]

B=[a;b;c]

I am looking for a way to have:

C=[1*a, 2*a, 3*a; 4*b, 5*b, 6*b; 7*c, 8*c, 9*c]

Thanks in advance for your comments.

Answer 1

[Sean de Wolski]

or

 C=bsxfun(@times,A,B);

Answer 2

[Paulo Silva]

Just a little interesting thing I've done

syms a b c
A=[1, 2, 3; 4, 5, 6; 7, 8, 9]
B=[a;b;c];C=[];
for id=1:numel(B)
C=[C A(id,:)*B(id)];    
end
C

The symbolic result (only works if you have the symbolic toolbox and a valid license for it) is

[ a, 2*a, 3*a, 4*b, 5*b, 6*b, 7*c, 8*c, 9*c]

The result is symbolic and you can use the subs function to replace the letters by numbers.

Answer 3

[Victor]

Dear all, thanks.