CHAPTER 5 Advanced Plotting 39. The following function describes oscillations in some mechanical stre tures and electric circuits. z(t) = e-/sin(wt + cp) In this function ? is time, and w is the oscillation frequency in radians per unit time. The oscillations have a period of 2x/w, and their amplitudes decay in time at a rate determined by t, which is called the time constant The smaller r is, the faster the oscillations die out. Suppose that d = 0, w = 2, and r can have values in the range 0.5