Re: simplifying a summation / integral
- To: mathgroup at smc.vnet.net
- Subject: [mg64851] Re: simplifying a summation / integral
- From: Peter Pein <petsie at dordos.net>
- Date: Sun, 5 Mar 2006 03:19:30 -0500 (EST)
- References: <dubjgg$gpp$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Patrik schrieb: > Jean, Paul: > > Thanks for your comments. > > Yes I tried those and got the hypergeometricPFQ functions. But, I need to take the derivative of the summation and hence do not mind making approximations if that helps get a simple looking derivative (the derivative is part of a first order condition and hence I've to substitute the derivative in an equation & solve for x). The hypergeometricPFQ is not suited for that. > > Thanks, > Kartik > > Thanks, > Kartik > Hi, Patrik or Kartik, may I cite your OP? I know that the above expression is the same as Integral[((1+x)^q - 1)/x] So de derivative should equal ((1+x)^q-1)/x. Does this expression suit your needs? If not, I'm totally confused, sorry. Peter