Hi Montserrat, What exactly would you like to plot?
Your differential equation can be easily integrated so that you can get an implicit expression for F(x), i.e. expression like G(c,x,F(x)) = 0 where G is a known function and c is an arbitrary constant. For every value of c and each value of x such that x < (-1/k2 + (k1+k2)*ln(k1+k2)/k2^2) [if my calculations are correct!] there exist 2 possible values of F(x): one with F(x) <1 and one with F(x) > 1. So for each c you have two branches of the function F defined for x < x(c). You will need a numerical procedure to find these two values of F(x). Regards, Moshe. --- Montse Rue <[EMAIL PROTECTED]> wrote: > Hi, > > I would like to plot the following equation: > > dF(x)/dx=(k1+k2F(x))(1-F(x)) > > where k1 and k2 are parameters that I have estimated > already. > > How can I plot the curve in R? > > Thanks! > > Montserrat Rue > Universitat de Lleida (Spain) > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] 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. > ______________________________________________ [email protected] 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.
