i want to change the value in some specific rows how can i do it

i want to change the value in some specific rows how can i do it?

[Zoltán Csáti]

More specifically?

Answer 1

[C.J. Harris]

 A = [1 2 3; 1 2 3; 1 2 3; 1 2 3; 1 2 3; 1 2 3]

% Change Row 2
A(2,:) = [9 8 7];

% Change Row 5
A(5,:) = [5 5 5];

A =

     1     2     3
     9     8     7
     1     2     3
     1     2     3
     5     5     5
     1     2     3

Answer 2

[Abed]

name of matrix(row, column) = replacement value