RE: Product and Summation sign
- To: mathgroup at smc.vnet.net
- Subject: [mg66826] RE: [mg66788] Product and Summation sign
- From: "David Park" <djmp at earthlink.net>
- Date: Wed, 31 May 2006 06:31:46 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Larry,
Just use a HoldForm to stop evaluation.
Sum[x[i], {i, 1, 50}] // HoldForm
If you wish to manipulate an expression within a HoldForm you can use rules,
or you could try the ExpressionManipulation package at my web site below.
David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/
From: actuary at mchsi.com [mailto:actuary at mchsi.com]
To: mathgroup at smc.vnet.net
While a Mathematica user for some time, use has been limited to number
crunching and not symbolic manipulations. I started to remedy this
over the weekend.
I entered Sum[x[i],{i,1,50}] expecting to see a response with Summation
sign. Instead the output was x[1}+x[2]+x[3]+.....
What do I need to do to get output that includes the Summation sign?
StandardForm was checked.
Thanks.
Larry