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#360 integral yields strange error message ←	↑	→ #362 lower bound in a loop must be an integer

#361 integral yields strange error message

Edit detail for #361 integral yields strange error message revision 2 of 2

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Editor: kratt6 Time: 2007/12/20 02:13:42 GMT-8
Note:

added:

From kratt6 Thu Dec 20 02:13:42 -0800 2007
From: kratt6
Date: Thu, 20 Dec 2007 02:13:42 -0800
Subject: 
Message-ID: <20071220021342-0800@axiom-wiki.newsynthesis.org>

Status: open => duplicate 

see #360

It seems that all current CAS have a problem with this integral:

fricas

(1) -> integrate(1/(-3+v^3)*v/(-4+v^3)^(1/2),v)

   >> Error detected within library code:
   Not integrable (provided residues have no relations)

However, at least the error message could be better...

better error message? --wyscc, Sat, 08 Sep 2007 15:19:10 -0500 reply

                        AXIOM Computer Algebra System
              Version of Tuesday November 30, 2004 at 21:11:14
-----------------------------------------------------------------------------
   Issue )copyright to view copyright notices.
   Issue )summary for a summary of useful system commands.
   Issue )quit to leave AXIOM and return to shell.
-----------------------------------------------------------------------------
(1) -> )set mess auto off
(1) -> integrate(1/(-3+v^3)*v/(-4+v^3)^(1/2),v)   >> Error detected within library code:
   (1 . failed) cannot be coerced to mode (SparseUnivariatePolynomial (Expressio
n (Integer)))

protected-symbol-warn called with (NIL)

... --kratt6, Thu, 20 Dec 2007 02:13:42 -0800 reply

Status: open => duplicate

see #360