The driving point impedance Z(s) = s + 2s + 2The system

The driving point impedance Z(s) = s + 2
s + 2

The system is initially at rest. For a voltage signal of unit step, the current i (t) through the impedance Z is given by

I(s) =	(s + 3)
	s (s + 2)

=	3	-	1	.	1
	2s		2		s + 2

∴ i(t) =	3	-	1	e^-2t
	2		2

	3	-	1	e^-3t
	2		2