Re: NDSolve in 5.2
- To: mathgroup at smc.vnet.net
- Subject: [mg62431] Re: NDSolve in 5.2
- From: marks at wolfram.com
- Date: Thu, 24 Nov 2005 06:33:29 -0500 (EST)
- References: <dlc9ga$m9i$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
There was a complete rewrite of NDSolve between V4.2 and V5.0, so it is hard to tell for sure without an example. The single most probable cause is the change to the default AccuracyGoal and PrecisionGoal. In V4.2 they were 6 whereas since V5.0 they are 8. You could set them explicitly to 6 and see if that works - of course it will give a less accurate solution as V4.2 did: NDSolve[...,AccuracyGoal->6, PrecisionGoal->6] Mark Sofroniou Research and Development Wolfram Research