rowcomb.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=rowcomb(A,i,j,c)
% The command rowcomb(A,i,j,c) forms a matrix
% from A by adding c times the ith row of A
% to the jth row.
[m,n]=size(A);
if i<1|i>m|j<1|j>m
   error('Index out of range')
end
if i==j
   error('Illegal row operation')
end
B=A;
B(j,:)=c*A(i,:)+A(j,:);