rowscale.m

线性代数实验及MATLAB入门,电子工业出版社出版 陈怀琛 龚杰民合著

function B=rowscale(A,i,c)
% The command rowscale(A,i,c) multiplies
% row i of the matrix A by the scalar c
% and outputs the resulting matrix.
[m,n]=size(A);
if i<1|i>m
   error('Index out of range')
end
B=A;
B(i,:)=c*A(i,:);