The switch in the following circuit has been closed for a long time. At t = 0, it is opened. a) Write the expression for the current iL(t). b) Write the expression for the current io(t). c) Write the expression for the voltage vx(t). d) Write the expression for the power dissipated in the 26 Ω resistor. e) Sketch the power in dissipated in the 26 Ω resistor. f) Calculate the total energy dissipated in the 26 Ω resistor.