Mathmatica Problem...
- To: mathgroup at smc.vnet.net
- Subject: [mg14320] Mathmatica Problem...
- From: "Mr D.J. Winstanley" <d.j.winstanley at ic.ac.uk>
- Date: Tue, 13 Oct 1998 01:21:33 -0400
- Sender: owner-wri-mathgroup at wolfram.com
Dear mathgroup,
We have just upgraded to release 3 of mathematica and we have found a
problem with the Expand function as described in the mathematica
manual. Here is the mathematica 3.0 output...
In[3]:= Expand[Cos[x]^3 Sin[x]^2,Trig->True]
gives
3 2
Out[3]= Cos[x] Sin[x]
this is not the answer given in the manual, which is...
Cos[x] - Cos[3 x] - Cos[5 x]
------ -------- --------
8 16 16
We were led to believe that the new version was compatible with the
previous version.
Is there a switch to obtain compatibility???
Any comments on this would be appreciated. Also who should I send this
to at Wolfram?
thanks for your help
David Winstanley
IT Services Manager
Electrical and Electronic Engineering Department Room 1002, E&EE
Building
Imperial College
Exhibition Road
LONDON SW7 2BT
Phone: 0171-594-6273 or extn. 46273
Fax: 0171-823-8125
E-mail: d.j.winstanley at ic.ac.uk
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