NDSolve with (compiled) numerical functions

*To*: mathgroup at smc.vnet.net*Subject*: [mg77925] NDSolve with (compiled) numerical functions*From*: stefan.floerchinger at web.de*Date*: Wed, 20 Jun 2007 05:23:22 -0400 (EDT)

Dear Newsgroup Is it possible to solve (ordinary, first order, coupled) Differential equations numericaly with NDSolve, if the "right hand side" of the equation is given as a numerical, compiled function? To be concrete, my equations have the form x'[t] == beta_x[ t, x[t], y[t], z[t], ...] y'[t] == beta_y[ t, x[t], y[t], z[t], ...] z'[t] == beta_z[ t, x[t], y[t], z[t], ...] ... The functions beta_x, beta_y etc. are very complicated objects. I would like to compile them in advance or perhaps use mathlink to evaluate them externally. Best regards Stefan