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Revision 5464


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Author: dpvc
Date: Fri Sep 7 14:18:30 2007 UTC (12 years, 4 months ago)
Log Message:
Derivatives of absolute values were leaving out the chain rule when
written as |...| (but not as abs(...)).  The chain rule is built into
the derivatives of function objects automatically, but not of lists,
which is how |...| is implemented (a special form of parentheses), and
so I missed it when adding the derivative in this form.  Argh!

Changed paths:

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

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