params kp=0.5, km=0.5
params c=2, gl=0.5, gch=1.0, vl=-70, vch=20

v(0)=0

markov n 21
{0}{20*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{km}{0}{19*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{2*km}{0}{18*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{3*km}{0}{17*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{4*km}{0}{16*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{5*km}{0}{15*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{6*km}{0}{14*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{7*km}{0}{13*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{8*km}{0}{12*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{9*km}{0}{11*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{10*km}{0}{10*kp}{0}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{11*km}{0}{9*kp}{0}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{12*km}{0}{8*kp}{0}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{13*km}{0}{7*kp}{0}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{14*km}{0}{6*kp}{0}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{15*km}{0}{5*kp}{0}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{16*km}{0}{4*kp}{0}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{17*km}{0}{3*kp}{0}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{18*km}{0}{2*kp}{0}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{19*km}{0}{kp}
{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{0}{20*km}{0}

v'=(-gl*(v-vl)-gch*n/20*(v-vch))/c
aux n=n

@ total=100,trans=0 ,DT=.001,xlo=0,xhi=100,ylo=-80,yhi=0 
@ maxstore=1000000,bounds=10000
done