Maxima has a hessian function. Also, it's been a few years since I worked
through the second derivative test for the Lagrange method, but is the
determinant of the hessian all you need? I was thinking that you needed
to know if the hessian is positive or negative definite. There is a
function matrix_sign that attempts to do that.
Barton
-----maxima-bounces at math.utexas.edu wrote: -----
>Nice?Code.?This?is?the?generalization?to?n?dimensions: