The current i = 2t2 - 1 A, 1≤ t ≤ 3 s, is flowing through a certain circuit element. (a) If the element is a 4 H inductor, what energy is delivered to it in the given time interval? (b) If the element is a 0.2 F capacitor with v(1) = 2 V, what power is being delivered to it at t = 2 s?