Vectorize nested for loops

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Jesus Octavio
Jesus Octavio 2020-10-18
评论： Jesus Octavio 2020-10-18
Hello everyone.
I'd like to vectorize this code:
for i = 1:N-2
for j = 1:N
Jacobian(i,j) = D2Mat(i+1,j)+(2/XCheb(i+1))*...
D1Mat(i+1,j)+(xi^2)*n*Y(i+1)^(n-1)*D0Mat(i+1,j);
end
end
where D2Mat is (NxN), XCheb is (N,1), D1Mat is (NxN), D0Mat is (NxN), Y is (N,1) and xi, n are real values.
Thanks

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采纳的回答

David Hill
David Hill 2020-10-18
编辑：David Hill 2020-10-18
Jacobian=D2Mat(2:end-1,:)+(2./XCheb(2:end-1)).*D1Mat(2:end-1,:)+((xi^2)*n*Y(2:end-1).^(n-1)).*D0Mat(2:end-1,:);

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