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Derivative(3pm) 					User Contributed Perl Documentation					   Derivative(3pm)

NAME
       Math::Derivative - Numeric 1st and 2nd order differentiation

SYNOPSIS
	   use Math::Derivative qw(Derivative1 Derivative2);
	   @dydx=Derivative1(@x,@y);
	   @d2ydx2=Derivative2(@x,@y);
	   @d2ydx2=Derivative2(@x,@y,$yp0,$ypn);

DESCRIPTION
       This Perl package exports functions for performing numerical first (Derivative1) and second Derivative2) order differentiation on vectors
       of data. They both take references to two arrays containing the x and y ordinates of the data and return an array of the 1st or 2nd
       derivative at the given x ordinates. Derivative2 may optionally be given values to use for the first dervivative at the start and end
       points of the data - otherwiswe 'natural' values are used.

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

BUGS
       Let me know.

AUTHOR
       John A.R. Williams <J.A.R.Williams@aston.ac.uk>

perl v5.12.3							    2011-06-14							   Derivative(3pm)