# cable boundary value problem
# 0 = D u'' - u
# c0 = a0 u(0) + b0 u'(0)
# cl = al u(l) + bl u'(l)
u'=up
up'=u/d
par d=1,c0=1,a0=1,b0=0,cl=0,al=0,bl=1
bndry a0*u+b0*up-c0
bndry al*u'+bl*up'-cl
@ total=10.001,dt=.01
@ xhi=10.001,yhi=1.001,ylo=0
done