How to generate this lower triangular matrix?

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moonthedrow
moonthedrow 2015-3-23
评论： Stephen23 2015-3-23
Given an array of x, how to generate this matrix?

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John D'Errico
John D'Errico 2015-3-23
编辑：John D'Errico 2015-3-23
This should work. Assume that x is a column vector.
x = [2 3 5 7 11 13]';
A = bsxfun(@minus,x,x');
A = [ones(size(x)),A(:,1:n-1)];
cumprod(A,2)
ans =
1 0 0 0 0 0
1 1 0 0 0 0
1 3 6 0 0 0
1 5 20 40 0 0
1 9 72 432 1728 0
1 11 110 880 5280 10560

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