Re: NDSolve: Functions in PDEs have different number of variables

*To*: mathgroup at smc.vnet.net*Subject*: [mg99662] Re: NDSolve: Functions in PDEs have different number of variables*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Sun, 10 May 2009 05:18:40 -0400 (EDT)*References*: <gu3asb$t87$1@smc.vnet.net>

Hi, as already told you, a G[t] is also G[x,t] and G[x,y,t] and G[x,y,z,t] ... Regards Jens Blue Fly wrote: > Dear Mathgroup: > > I recently asked a question about solving a set of PDEs. My question could > be abstracted as the follows: > > Two functions, F[x, t] and G[t], satisfy a set of PDEs of two equations: > > Equation one involves D[F[x, t], x], D[F[x, t], t], and G[t]; > while Equation two involves F[0, t] and D[G[t], t]. > > > When solving the set of PDEs, NDSolve complains that F[x, t] and G[t] have > different number of variables, even though the problem is physically > well-defined. > > I would appreciate if someone could provide a hint on this questions. > > Thanks. > > Dave > >