Plz help

Given that the switch in Fig. 5-32 was moved to position 2 at 1 = 0 (after it had been in position 1 for a long time) and then returned to position 1 at t = 10 s, determine the voltage response v(t) for t _ 0 and evaluate it for V1 = 20 V, RI = 80 ks2, R2 = 20 ks2, and C = 0.25 mF. RI -0 R2 m 1 = 10s