Maplesoft is leader, Maplesoft is best, Maplesoft blah-blah-blah.

[Vladimir Bondarenko]

................................................................

http://www.maplesoft.com/support/

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

................................................................

http://www.maplesoft.com/products/toolboxes/?D=8

"Maplesoft is a world leader in mathematical and
analytical software."

................................................................

Maplesoft, blah-blah-blah.

................................................................

DESCRIPTION: This Maple bug persists since at least 1994 on.

TEST CASE: f := dilog(ln(2))-dilog(ln(2)-1):
evalf( f );
evalf(simplify(f));

EXPECTED: -1.912862471+.8407587399*I
-1.912862471+.8407587399*I

-------------------- (2005) Maple 10.00 -----------------------
-1.912862471+.8407587399*I
-1.912862471+1.151434299*I
-------------------- (2004) Maple 9.5.1 -----------------------
-1.912862471+.8407587399*I
-1.912862471+1.151434299*I
-------------------- (2004) Maple 9.5 -------------------------
-1.912862471+.8407587399*I
-1.912862471+1.151434299*I
-------------------- (2003) Maple 9 ---------------------------
-1.912862471+.8407587399*I
-1.912862471+1.151434299*I
-------------------- (2002) Maple 8 ---------------------------
-1.912862471+.8407587399*I
-1.912862471+1.151434299*I
-------------------- (2001) Maple 7 ---------------------------
-1.912862471+.8407587399*I
-1.912862471+1.151434299*I
-------------------- (2000) Maple 6 ---------------------------
-1.912862471+.8407587399*I
-1.912862471+1.151434299*I
-------------------- (1997) Maple V Rel 5 ---------------------
-1.912862471+.8407587399*I
-1.912862471+1.151434299*I
-------------------- (1995) Maple V Rel 4 ---------------------
-1.912862471+.8407587399*I
-1.912862471+1.151434299*I
-------------------- (1994) Maple V Rel 3 ---------------------
-1.912862471+.8407587390*I
-1.912862471+1.151434299*I
----------------------------------------------------------------

................................................................

f := dilog(ln(2))-dilog(ln(2)-1):
evalf( f );
evalf(simplify(f));

-1.912862471+.8407587399*I
-1.912862471+1.151434299*I

................................................................

f := dilog(sqrt(9/10))-dilog(sqrt(9/10)-1):
evalf( f );
evalf(simplify(f));

-1.792232276+.1572159164*I
-1.792232274+.165499909*I

................................................................

f := dilog(1/sqrt(2))-dilog(1/sqrt(2)-1):
evalf( f );
evalf(simplify(f));

-1.916522224+.8070202140*I
-1.916522224+1.088793046*I

................................................................

f := dilog(cos(1))-dilog(cos(1)-1):
evalf( f );
evalf(simplify(f));

-1.827049100+1.188242564*I
-1.827049100+1.934047597*I

................................................................

f := dilog(cos(1)^2)-dilog(cos(1)^2-1):
evalf( f );
evalf(simplify(f));

-1.537677410+1.681902142*I
-1.537677409+3.868095194*I

................................................................

f := dilog(1+exp(I)^2)-dilog(exp(I)^2):
evalf( f );
evalf(simplify(f));

-.8224670334+.757014896*I
.5259160725-1.121859026*I

................................................................

The VM machine witnesses,

There are dozens of thousands of distinct bugs in Maple.

http://maple.bug-list.org/maple-crisis.php

................................................................

http://www.cybertester.com/ Cyber Tester, LLC
http://maple.bug-list.org/ Maple Bugs Encyclopaedia
http://www.CAS-testing.org/ CAS Testing

................................................................

[Mj]

maple is too complicated to use

[vs...@hotmail.com]

On web-site http://www.geocities.com/aladjak/index1.htm you can find
interesting enough information about so-called leading expert on CAS
mr. V. Bondarenko. Unfortunately, the information is on Russian.
However, now the information is being translated to English.

[Vladimir Bondarenko]

An anonymous pusher of Noosphere Academy
v...@hotmail.com writes on Tue, Apr 25 2006 9:46 am

http://groups.google.com/group/sci.math.symbolic/msg/e9ba9bbd906fcae0

> leading expert on CAS mr. V. Bondarenko.

I strongly prefer my original definition:

"A leading world's CAS researcher"

The results the Cyber Tester's team has achieved under my
leadership will improve many computer algebra systems, in
particular, AXIOM, Derive, Maple, Mathematica, Maxima. We
are not in haste to publish all the results, though. This
is a point of strategy.

To the joy of the symbolic community, their output will be
more user-friendly and mathematically correct.

Some CASs could die out being unable to compete with their
more advanced rivals.

Best wishes,

Vladimir Bondarenko

VM and GEMM architect
Co-founder, CEO, Mathematical Director