The instantaneous impedance (Z) of a circuit had a rate of change over time modeled by: dZ/dt = (csc(2t))² ohms/sec.

(Hint: Z_avg = _t1^t2(x)dx/(t₂ - t₁))

Calculate dZ/dt when t = .00004 sec.

Calculate the average impedance for the time period from 1 to 1.5 Don't forget the units!