(c) Ignoring the charge in voltage over time in the wave equation above, write the ODE and its solution for the voltage in the steady state case as a function of distance.(d) Assuming that the action potential depolarizes the membrane to 20mV and the threshold potential Vth = -40mV, if the Vm is -80mV, how long can the damaged zone be before transmission is interrupted? Assume that the axon is the same radius as above and that those parameters apply. rm=1.06*10^6 ohm*cm; ri=530.5*10^6 ohm/cm, cm=1.88*10^-3