please help complete these questions in matlab!

1. Plot stimulation currents, voltage membrane outputs, and channel conductances for stimulation currents of 0pA,25pA,50pA and 100pA for a total time of 100msec stimulated between 10ms and 90ms. For each stimulation current amplitude, calculate the resulting firing rate (i.e., spikes/sec). 2. Plot stimulation currents, voltage membrane, and channel conductances outputs for a stimulation current of 250pA and stimulation durations between 10ms90ms,30ms70ms,40ms 80ms. Does the stimulation duration change the firing rate? 3. Compute and plot the firing rate as a function of stimulation current amplitude from 0 to 250pA for a stimulation duration of 1sec (in steps of 25pA should give a reasonable plot). Instead of calculating the number of spikes and scaling by the stimulation duration, use the Matlab function f indpeaks to find the mean frequency of the spikes. function val=bh(V) val=1./(exp(3(V+71)/10)+1)