Matlab multiply each row in matrix by different number

matlab, matrix, multiplication, vector

Solution

You just need to multiply a diagonal matrix by A like so.

A = [ 1 2 3 ; 4 5 6 ; 7 8 9 ; 10 11 12];
disp(diag([1 2 3 4]) * A);

 1     2     3
 8    10    12
21    24    27
40    44    48

Problem

Say that I have a matrix: ``` A = [ 1 2 3 ; 4 5 6 ; 7 8 9 ; 10 11 12]; ``` Is there a way to multiply : row 1 by 1 row 2 by 2 row 3 by 3 and so on? I am able to do this with for loops, however it if for an assignment where they want us to use matrices. In the actual assignment `A` is filled with random number but each row which by multiplied consecutively. Thanks, any help is much appreciated

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