Problem 4. (Total: 25 points, 5 points each) In the circuit shown in Figure 3 below which is at steady state until 1-0 and the switch opens at t-0, find the followings. 12 V + 0 i₁(1) ww 602 www 12 Ω i(t) 2H gure 4. Figure related to Problem 4 Draw an equivalent circuit at t<0, and find i₁(0-)