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[Axiom-developer] [Axiom-mail] [Axiom-mail] Non elementary integration


From: root
Subject: [Axiom-developer] [Axiom-mail] [Axiom-mail] Non elementary integration
Date: Thu, 25 Aug 2005 09:39:04 -0500

Changes http://page.axiom-developer.org/zope/mathaction/AxiomMail/diff
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Stefano,

The key words are "elementary function". Some integration is done by
the Risch Algorithm. Essentially the Risch Algorithm can integrate
any function which results in something like

    f(x) + log 

exp(x)/x^2 cannot be integrated into this form. Axiom does some
integration by pattern matching and it appears that the pattern
matcher does not know exp(x)/x^2

Tim

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