solve by runge kutta method

lamda1=0.2;
mu1=1-lamda1;
lamda2=0.3;
mu2=1-lamda2;


A=[-(lamda1+lamda2) mu2 mu1 0;lamda2 -(mu2+lamda1) 0 mu1;lamda1 0 -(lamda2+mu1) mu2;0 lamda1 lamda2 -(mu1+mu2)];
B=[1;0;0;0];
C=A*B;

how can i solve c matrix by runge kutta method?

[Torsten]

And you really think somebody knows what you are asking for ?

[Jan]

A Runge-Kutta method computes an approximated solution of an initial value problem of an ordinary equation system. You cannot "solve a matrix" with it and I do not know, what "solving a matrix" means mathematically.