The voltage and current at the terminals of the circuit element in Fig 1.5 are zero for t < 0. Fort 20, they are: V = (1500t + 1)e-750tV -750t m A i = 40e Fig. 1.5 a) Find the time when the power delivered to the circuit element is maximum. (I AM REALLY NEEDING A REFRESHER IN THE RULES OF DIFFERENTIATION HERE, SO SOME EXTRA EXPLANATION IN THAT AREA WOULD BE GREATLY APPRECIATED) b) Find the maximum value of p in milliwatts. C) Find the total energy delivered to the circuit element in microjoules.