variable initial value in NDSolve
- To: mathgroup at smc.vnet.net
- Subject: [mg99123] variable initial value in NDSolve
- From: Stef <ste.peer at gmail.com>
- Date: Tue, 28 Apr 2009 04:42:27 -0400 (EDT)
Dear Mathematica community,
I am pretty new with using Mathematica. So, maybe there is a very
obvious solution to my problem that I missed to find out myself.
I am trying to solve a problem that is setup like that:
The cost function ec[t] depends on cumulative arrivals R[t]. At a
variable starting point tstart (for which i try to find a cost-
minimizing value in a NMinimize fct), cumulative arrivals are 0.
NDSolve[{ec'[t]==0,R[tstart]=0}, R[t],t]
But obviously, the derivative of R[tstart] goes to infinity, which is
why no solution can be found.
Thanks for helpful comments!