how to multiply only the second row of matrix with a number

how to multiply only the second row of matrix 2*2 with a random integer and change entry 2*2 to be equal to the entry (1,2)

Answer 1

[KSSV]

If A is 2*2 matrix. To multiply the second row with a constant:

K = 5 ;    % a constant 
A(2,:) = K*A(2,:) ; 

[Hung Tat Ho]

hi. thanks for your answer but i mean only muliply the second row of the matirx 2*2 with a constan but the result is till a matrix 2*2.

[KSSV]

K = 5 ;    % a constant 
iwant = K*A(2,:) ; 

[Hung Tat Ho]

thanks mate> do you know how to change entry matrix 2*2 to be equal to the entry matrix (1*2)?