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[project @ 2005-03-31 03:03:07 by jwe]
author jwe
date Thu, 31 Mar 2005 03:03:07 +0000
parents b7758860ea6b
children
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a = [1, 2, 3; 5, 4, 6; 8, 7, 9];
[p, h] = hess (a);
size (p) == [3, 3] && size (h) == [3, 3] && abs (a - p * h * p') < sqrt (eps)