NDSolve error message: Can't find starting value ...
- To: mathgroup at smc.vnet.net
- Subject: [mg23755] NDSolve error message: Can't find starting value ...
- From: Axel Kowald <axel at itb.biologie.hu-berlin.de>
- Date: Mon, 5 Jun 2000 01:09:50 -0400 (EDT)
- Organization: Technische Universitaet Berlin, Deutschland
- Sender: owner-wri-mathgroup at wolfram.com
Hello,
I try to solve the following second order ODE with NDSolve
NDSolve[{0 == R''[x] + DiracDelta[x] - R[x], R''[-3] == 0,
R''[3] == 0}, R, {x, -3, 3}]
and I get the following error message:
NDSolve::"ndsv": "Cannot find starting value for the variable x."
I couldn't find any description of this message in the Mathematica book, so I'm
not sure what to do. I have a second order ODE with two boundary
conditions, what's missing ?
Many thanks,
Axel Kowald
P.S. Btw., this is done with Mathematica 4.