Re: Problem with RSolve
- To: mathgroup at smc.vnet.net
- Subject: [mg62674] Re: Problem with RSolve
- From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
- Date: Wed, 30 Nov 2005 22:08:34 -0500 (EST)
- Organization: Uni Leipzig
- References: <dmk02k$781$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, Mathematicas RSolve[] has beeen improved in version 5 and RSolve[{c[n] == c[n - 1] + (n^2) Log[n], c[0] == 0}, c[n], n] gives {c[n] -> (-69*n - 57*n^2 - 14*n^3 + 36*Log[Gamma[1 + n]] + 72*n*Log[Gamma[1 + n]] + 36*n^2*Log[Gamma[1 + n]] - 36*Log[Gamma[2 + n]] - 72*n*Log[Gamma[2 + n]] - 36*n^2*Log[Gamma[2 + n]] - 36*Derivative[1, 0][Zeta][-2, 2] + 36*Derivative[1, 0][Zeta][-2, 2 + n])/36}} Regards Jens "Jean Guillaume Pyraksos" <wissme at hotmail.com> schrieb im Newsbeitrag news:dmk02k$781$1 at smc.vnet.net... |I can't get this one solved, can you help ? | | RSolve[{c[n] == c[n - 1] + (n^2) Log[n], c[0] == 0}, c[n], n] | | I am interested in the principal part of c[n], which should be 1/2 n^2 | Log[n]^2 ?... | | Thanks, using Mathematica 4.1.0.0 | | JG |