Maple bugs: Big festal day - comp.soft-sys.math.maple

Message from discussion Maple bugs: Big festal day

Vladimir Bondarenko

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More options Nov 28 2004, 3:46 am

Newsgroups: sci.math.symbolic, comp.soft-sys.math.maple

From: v...@cybertester.com (Vladimir Bondarenko)

Date: 28 Nov 2004 00:46:27 -0800

Local: Sun, Nov 28 2004 3:46 am

Subject: Maple bugs: Big festal day

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Hello all,

Dear friends, let me cordially congratulate all Maple customers as well
as the whole symbolic computation community with a big event!

As we learn from http://www.maplesoft.com/support/

MS> Maplesoft is committed to providing the highest level of support
MS> for the products it sells.

MS> Maple 9 is the premium software system for any activity that
MS> involves mathematics.

MS> Maplesoft, a division of Waterloo Maple Inc., is a leading
MS> producer of advanced software for mathematics.

We celebrate 15 years since a bug in Maple was reported *publicly* !

ftp://ftp.maplesoft.com/pub/maple/mug/Digest.1

Date: Thu, 26 Oct 89 20:34:02 +0100
From: Gerald Edgar <ed...@function.mps.ohio-state.edu>
Subject: residues

Does anyone have some suggestions on how this problem should be done:

> u := x^3/(1-x^5): readlib(residue): residue(u,x=exp(2*PI*I/5));

> residue(u,x=RootOf(1+x+x^2+x^3+x^4,x));

> z := exp(2*Pi*I/5);

z := exp(2/5 I Pi)

> limit(u*(x-z),x=z);

November 28, 2004. With a big trepidation I tried this... Hurrah! Hurrah!
Three cheers and a tiger! I should not have any fears, the bug is intact!
Even a simpler example:

Maple 9.5.1> residue(1/(z-1), z= RootOf(z^2-2*z+1,z));
0

Maple 9.5.1> residue(1/(z-1), z= evalf(RootOf(z^2-2*z+1,z)));
residue(1/(z-1), z= convert(RootOf(z^2-2*z+1,z),radical));

1
1

Best wishes,

Vladimir Bondarenko

http://www.cybertester.com/
http://maple.bug-list.org/
http://www.CAS-testing.org/

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