Hi everyone. Can anyone please tell me how do i used optim or nlm function after solving a ode bx desolve package? I have a set of two differential equation, first i solved them with deSolve package and now i want to optimize my two parameter values for the same twoo differential equation? please let me know if anyone has any idea about it..!! Thanks in advance... -- View this message in context: http://r.789695.n4.nabble.com/deSolve-optim-nlm-function-tp4495446p4495446.html Sent from the R help mailing list archive at Nabble.com.