Question

The waveform of a voltage in an electrical circuit has the following parameters:
 A continuous series of right-angled triangles, each with a base length equivalent to 3 ms
 9 V maximum
 Voltage ramps up over the 3 ms and then drops back to zero instantaneously
 Sketch the waveform and mark on the relevant parameters.
 Derive the function which defines the waveform.
 Using integral calculus, find the RMS value of the voltage.