1Derivative(3)         User Contributed Perl Documentation        Derivative(3)
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SYNOPSIS

6           use Math::Derivative qw(Derivative1 Derivative2);
7           @dydx=Derivative1(\@x,\@y);
8           @d2ydx2=Derivative2(\@x,\@y);
9           @d2ydx2=Derivative2(\@x,\@y,$yp0,$ypn);
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DESCRIPTION

12       This Perl package exports functions for performing numerical first (De‐
13       rivative1) and second Derivative2) order differentiation on vectors of
14       data. They both take references to two arrays containing the x and y
15       ordinates of the data and return an array of the 1st or 2nd derivative
16       at the given x ordinates. Derivative2 may optionally be given values to
17       use for the first dervivative at the start and end points of the data -
18       otherwiswe 'natural' values are used.
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HISTORY

21       $Log: Derivative.pm,v $ Revision 1.1  1995/12/26 16:26:59  willijar
22       Initial revision
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BUGS

25       Let me know.
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AUTHOR

28       John A.R. Williams <J.A.R.Williams@aston.ac.uk>
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32perl v5.8.8                       1995-12-26                     Derivative(3)
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