Conditonal sum
- To: mathgroup at smc.vnet.net
- Subject: [mg50263] Conditonal sum
- From: "Christopher Grinde" <christopher.grinde at hive.no>
- Date: Mon, 23 Aug 2004 06:34:44 -0400 (EDT)
- Organization: Vestfold University College
- Sender: owner-wri-mathgroup at wolfram.com
I am new to mathematica and could really need a tip on how to implement a conditional sum. Pseudocode would be something like this EndSum=a; if j in Sm: EndSum=EndSum+f[j] end I have tried doing this by using an If-clause inside the sum-function, but this seems little elegant and is nor very suitable for symbolic calculations. Any advice would be highly appreciated Christopher Grinde