%%%%%%% Parallel RLC Circuit: Problem Statement (mimic HW problems)

Consider a parallel RLC circuit driven by a current source.  Determine
the step response for the following sets of component values, and use
MATLAB to plot each response from t = [0,T]:

	Case (i)  : R = 1 Ohm, C = 1 Farad, L = 6 Henrys, T = 20 sec
	Case (ii) : R = 1 Ohm, C = 1 Farad, L = 1 Henry , T = 20 sec
	Case (iii): R = 1 Ohm, C = 1 Farad, L = 4 Henrys, T = 20 sec

Basic Note:    You may find the following commands useful:  plot, title, 
							    xlabel, ylabel

Advanced Note: You may find the following commands useful:  residue, step