fracational runge kutta method

Hi, Kind Regards. I want to solve fractional order Lorenz, fractional order lorenz hyper chaotic maps using fourth order runge-kutta and fourth order runge-kutta fehlberg method. Any help with matlab code is much appreciated.

Thanking you,

rgds Parameswaran Bose

[Jan]

What kind of assistence do you expect? Do you need a complete code which magically fits your needs?

It is more likely that you get help, when you post, what you have tried so far and explain the occurring problems.

[iman karimi]

may any one help me to write code about fracational runge kutta method? is there any code for this problem?