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Revision 4299

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Author: dpvc
Date: Wed Jul 26 12:27:07 2006 UTC (13 years, 3 months ago)
Log Message:
Extended the differentiation operator to handle multiple derivatives:

	  $f->D("x","y")    is the same as $f->D("x")->D("y")
	  $f->D(2)          is the same as $f->D->D
	  $f->D(2,"x")      is the same as $f->D("x")->D("x")

and so on.

Changed paths:

Path Details
Directorytrunk/pg/lib/Parser/Differentiation.pm modified , text changed

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