Response to the following problem:
The capacitor of Fig. is initially charged to 3 V with the polarity shown.
a. Write the mathematical expressions for the voltage vC and the current iC when the switch is closed.
b. Sketch the waveforms of vC and iC.
![467_The capacitor.jpg](https://secure.tutorsglobe.com/CMSImages/467_The capacitor.jpg)