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Question: How to find (numerical) derivative of a procedure?

Question:How to find (numerical) derivative of a procedure?

Dregntael 5 Maple
procedure differentiation numeric incomplete-question
March 13 2011
1

I have created a procedure called Tproc with 3 arguments (t,k,b). Now I want to calculate the partial derivatives of this procedure with respect to k and b. Looking at the help page of fdiff, i tried this:

fdiff(Tproc, [2], [2,10,2.5])

but all maple returns is:

fdiff(Tproc, [2], [2,10,2.5])

instead of a value. Is there any option for fdiff to force a numerical value? Or am I doing something wrong?

Thank you for your help.
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