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RE: sum question
*To*: mathgroup at smc.vnet.net
*Subject*: [mg91196] RE: [mg91169] sum question
*From*: "Jose Luis Gomez" <jose.luis.gomez at itesm.mx>
*Date*: Sat, 9 Aug 2008 07:45:00 -0400 (EDT)
*References*: <200808081114.HAA11632@smc.vnet.net>
Dear Philip
1) Post your Mathematica code, so that we can help you
2) Take look at this, it might be useful:
http://homepage.cem.itesm.mx/lgomez/matecmatica/fp/fp.html
http://homepage.cem.itesm.mx/lgomez/matecmatica/funcionalprog.nb
Best regards
Jose
Mexico
-----Mensaje original-----
De: Kopp, Philip F [mailto:philip-kopp at uiowa.edu]
Enviado el: Viernes, 08 de Agosto de 2008 06:14
Para: mathgroup at smc.vnet.net
Asunto: [mg91169] sum question
Hi, I am trying to work with a rather large sum(>200 terms) in Mathematica
, but the program displays some odd behavior.
When I multiply each term in the sum by 1, I get 1 for the answer. When I
change 1 to 1.0, I get an incredibly large number for the answer.
There seems to be some problem with using decimal numbers in this large sum.
I tried Rationalize[1.0], and it works. What I am really trying to do is
multiply each term by a different number(all less than one) that I
calculated in another program. These numbers are in decimal form, so I run
into the same problem. When I try rationalize here, it doen't fix the
problem. Any other suggestions?
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