For R1 = 1000 -ohm, R2 = 500 -ohm,R3 = 5000 -ohm, and RL = 2000 -ohm. The source is sinusoidal, vi (t) =120 cos(2-ohm60 t). Using the piece-wise linear model for the diode, sketch a few cycles of the time function for the output voltage, v0 (t). Label sections of the cycles where the diode is forward biased and the sections where it is reverse biased. (Assume the diode never reaches a breakdown condition.) Calculate the most positive and most negative values for the output waveform and mark them on the sketch.