Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1998
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1998

[Date Index] [Thread Index] [Author Index]

Search the Archive

How to Extract a common factor from a Sum

  • To: mathgroup at smc.vnet.net
  • Subject: [mg12882] How to Extract a common factor from a Sum
  • From: loewenthal at iap.unibe.ch (Frank Loewenthal)
  • Date: Wed, 24 Jun 1998 03:44:08 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Folks

I have a symbolical sum like

expr = Sum[ a f[k], {k,1,N}] and I want to force Mathematica to write
this as
expr = a Sum[f[k], {k,1,N}]

What ever I tried it did not work.
Does anyone knows a solution?

Thanks in advance

Frank


  • Prev by Date: Find Max of "Concave" List
  • Next by Date: Visual c++ mathematics
  • Previous by thread: Re: Find Max of "Concave" List
  • Next by thread: Re: How to Extract a common factor from a Sum