Could anyone help me how to multiply the second and third element of the row in a matrix by an value of 2 and 3.

I am having the matrix A=[ 2 3 4]

I want to multiply the second element by 2 and third element by 3.

could anyone please help me on this.

Answer 1

[Sindar]

A=[ 2     3    4];
A(2) = A(2)*2;
A(3) = A(3)*3;

More generally, you can use elementwise multiplication:

A=[ 2 3 4 5 6 7 8];
A = A.*[1:7];

Also, this is a great resource for starting out in Matlab: https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html