how do i use for loop to fine determinant of Vandermonde matrix?

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Xiaoyan
Xiaoyan 2014-11-7
回答： Zoltán Csáti 2014-11-13
how do i use for loop to fine determinant of Vandermonde matrix?

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Roger Stafford
Roger Stafford 2014-11-7
Let V be an n-by-n Vandermonde matrix.
d = 1;
for k = 1:n-1
d = d*prod(V(k+1:n,2)-V(k,2));
end % <-- At exit d equals det(V)
This might give you greater accuracy for this special kind of matrix than using 'det'. See
http://en.wikipedia.org/wiki/Vandermonde_matrix

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Zoltán Csáti
Zoltán Csáti 2014-11-13
If you want to calculate the determinant of an arbitrary matrix in a loop, you can also do it by using the Levi-Civita symbol.

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