Index in Position 1

It keeps saying Index in position 1 exceeds array bounds (Must not exceed 1)

I am fairly new to matlab but I think its saying some value is 0, I am looking for a 4x4 matrix, I have gotten 4x3, but now it only gives me that error and im not sure where I am going wrong.

[Walter Roberson]

Row 2 of A does not exist at the time the error occurs.

[BoostedMan]

How would I change this in order to get zero's above the diagonal in the A matrix?

[Walter Roberson]

A = zeros(n-1, n);

Answer 1

[VBBV]

%Lab 8
%Jack Philibotte
%--------------------
%Polynomial Interpolation
x= [15, 20, 25, 30];
y= [1476.77, 1482.19, 1496.69, 1509.28];
%------------
n=length(x);
A = ones(4,4);
for k= 1:n-1
    for kk=2:n
        A(k,kk)= (x(k)-x(1))*A(k,kk-1);
    end
end
disp(A)
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