1. The problem statement, all variables and given/known data In the given circuit (voltage source is V) , we have to find initial and final values of current and also di(0+)/dt , di2)0+)/dt , d2i1(0+)/dt2 . Now , by intial and values of currents , does they mean i(0-) and i(0+) or the discharging or charging current?? nd how to form the equations to solve it out?? 2. Relevant equations 3. The attempt at a solution beforing closing the switch , the current across the inductor , say i(0-) = (R1+R2)i2 = i(0+) when we close the switch , capacitor will be shorted , and inductor will be open-circuited , so the KVL equation in the first loop will be V-i1R=0 by differentiating we get di1(0+)/dt = 0 similarly , d2i1(0+)/dt2 =0 how we will solve for di2(0+)/dt and d2i2(0+)/dt2 then..??