when i run this programme which is a decomposition lu i get Error using / Arguments must be numeric, char, or logical. Error in untitled2 (line 10) L(:,1) = A(:,1)/U(1,1);

A=("entrer le scoeficients de votre matrice");

B=("entrer le vecteur");

N=length(A);

L=zeros(N,N);

U=zeros(N,N);

for a=1:N

L(a,a) = 1;

end

U(1,:) = A(1,:);

L(:,1) = A(:,1)/U(1,1);

for i=2:N

for j=i:N

U(i,j) = A(i,j) - L(i,1:i-1)*U(1:i-1,j);

end

for k=i+1:N

L(k,i) =(A(k,i) - L(k,1:i-1)* U(1:i-1,i))/U(i,i);

end

end

L;U;

Y=zeros(N,1);

Y(1) = B(1)/L(1,1);

for k=2:N

Y(k)=B(k)-L(k,1);

end

Y;

X=zeros(N,1);

X(N)=Y(N)/U(N,N);

for k=N-1:-1:1

X(k)=(Y(k)-U(k,k+1:N)*X(k+1:N))/U(k,k);

end

Answer 1

[VBBV]

A=input("entrer le scoeficients de votre matrice");
B=input("entrer le vecteur");

[VBBV]

A and B are user inputs which can be done using input function. Otherwise they are string expressions