Re: Delayed Differential Equations [NDelayDSolve]
- To: mathgroup at smc.vnet.net
- Subject: [mg65204] Re: Delayed Differential Equations [NDelayDSolve]
- From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
- Date: Fri, 17 Mar 2006 05:45:44 -0500 (EST)
- Organization: Uni Leipzig
- References: <dvdibe$a1c$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, it is no wonder that NDelaySolve[] is so slow because it uses NDSolve[]. The usual way to solve a delay equation is to use a continuous output initial value solver, that allow the same order for the interpolation for the method itself and the continuous output. Regards Jens "ben" <benjamin.friedrich at gmail.com> schrieb im Newsbeitrag news:dvdibe$a1c$1 at smc.vnet.net... | Hello, | | I need to integrate a delayed differential equation and experienced the | following problems with NDelayDSolve: | | slow integration (10-100 times slower than NDSolve) | warnings about precission, accuracy, ... | warnings about zero residual | | Does anybody has experience with NDelayDSolve | and knows how to circumvent this problems? | | Is NDelaySolve better? | | Thanks | Ben |