Average/RMS Values of a Rectangular and Ramp Function

[ohdrayray]

Homework Statement

Homework Equations

I_rms = $\frac{I_m}{\sqrt{3}}$

The Attempt at a Solution

I'm lost on how to do a completely, whereas for b. I can find the I_rms:
I_rms = $\frac{6}{\sqrt{3}}$ = 3.46 mA
and the average, I'm guessing is 6/2 = 3 mA?

Thank you in advance!

 

[NascentOxygen]

This is not an exercise you do in your head.

To find the RMS: you take the square root of ... the average value of ... the graph of one cycle of the waveform SQUARED.

So you draw a new graph, this time plotting instantaneous V² vs. time
Then determine the area under that curve, and average it over the whole cycle.
Then take the square root of this average value.