partial differential

*To*: mathgroup at smc.vnet.net*Subject*: [mg44763] partial differential*From*: Uli Wuerfel <uli.wuerfel at fmf.uni-freiburg.de>*Date*: Tue, 25 Nov 2003 00:45:31 -0500 (EST)*Organization*: Rechenzentrum der Universitaet Freiburg, Germany*Sender*: owner-wri-mathgroup at wolfram.com

Hi experts, I have problems with solving stuff like \!\(pd = \[PartialD]\_t\ n[x, t] == \(-dif\)\ \[PartialD]\_\(x, x\)\ n[x, t] + int\ Exp[\(-\[Alpha]\)\ x] - rek\ n[x, t]\) ( where dif, int, alpha and rek are constants ) I tried it via \!\(lsg = NDSolve[{pd, n[x, 0] == nstart, n[0, t] == nstart, \((\[PartialD]\_x\ n[x, t] /. x -> thickn)\) == 0}, n, {x, 0, thickn}, {t, 0, 2}]\) ( again nstart and thickn are constants ) but could not make it... Have any advice?? Thank you, Uli