2 # define the variable, v and its derivative vx v v=1,vx=0 # define the 4 parameters, a,b,v0,lambda^2 p a=1,b=0,v0=1,lam2=1 # now do the right-hand sides o vx o v/lam2 # # and finally, boundary conditions # First we want V(0)-V0=0 b v-v0 # # We also want aV(1)+bVX(1)=0 b a*v'+b*vx' # Note that the primes tell XPP to evaluate at the right endpoint done