function B = rowmultiple(A,i,k)
    % ROWMULTIPLE   Given an m x n matrix A
    %               along with an integer i between 1 and m and a
    %               nonzero scalar k this function will priduce a m x n
    %               matrix B that is the result of multiplying row i of
    %               A by k
    B = A;
    B(i,:) = k * A(i,:);