Ollie - please add some comments to your code. What are the inputs? What algorithms have you implemented? Why do you think that incorrect answers are being returned?
How to interpolate data points
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I'm trying to answer the following question:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/150126/image.jpeg)
This is the code I have so far:
function [f table] = interpol(x, xdata, ydata)
N = length(xdata);
A = zeros(N,N+1);
A(:,1) = xdata;
A(:,2) = ydata;
for col = 3:N+1
for row = 1:N-1 -(col-3)
A(row,col) = (A(row+1,2+col-3)-A(row,2+col-3))/(A(row+1+col-3,1)-A(row,1));
end
end
table = A(1:N-1,3:N+1);
f = ydata(end);
for I = N:-1:1
f = f.*(x-xdata(I)) + A(1,I+1);
end
end
This doesn't seem to be returning the right answers at the moment. Where do I go from here?
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