Hi Yanika, Depending on whether your problem is an initial value problem or a boundary value problem, you can find solution methods in R-packages deSolve (IVP) and bvpSolve (BVP).
The solvers in deSolve only solve differential equations written in first-order form; bvpSolve can handle higher-order DEs. For use in deSolve, you need to rewrite the 4th order DE as a set of 4 first-order equations: d''''y /dt = f(t,y) then becomes: dy1 = y2; dy2 = y3; dy3 = y4; dy4 = f(t,y) Hope this helps, Karline Message: 32 Date: Sun, 28 Nov 2010 22:47:59 +0100 From: Yanika Borg <akina...@gmail.com> To: r-help@r-project.org Subject: [R] non-linear fourth-order differential equations Message-ID: <aanlktimhoquhfsnjxr_n4zttrppp4ohw++ura6apx...@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 I need to solve a system of non-linear fourth-order differential equations. Is there a command which solves this system? Thanks in advance. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.