|--------C--------|
| |
R L
|-------.v(t).------|
Given the circuit shown in figure. Known that L=1H, R=6 Ω, C=1/9F, iL(0)=0, uC(0)= 2V. v(t)=2cos(t) V of 0<t<π and v(t)=0 if t>π
a) Find V(s) and IL(s)
b)=> iL(t) when t>0
