On a logarithmic vertical axis from 1ohm to 1Gohm, and a logarithmic horizontal axis from 1rad/sec to 10^9 rad/sec, sketch the following:
a) A 1 kOhm resistor and a 1 mH inductor in parallel and (separate curve) in series.
b) A 100 kOhm resistor and a 1 nF capacitor in parallel, and in series.
c) Label of those sections of each curve where the phase of the impedance is approx. 0, -90, or +90.