Displaying 1 result from an estimated 1 matches for "tf4166283".
2007 Jul 30
2
deriv, loop
...a(~gamma(x), "x") : Function 'psigamma' is not in the
derivatives table
What I want is the expression for the second derivative (which I believe is
trigamma(x), or psigamma(x,1)), how can I obtain that?
Thanks
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