Calculating Mean, RMS Value, Shape & Peak Factors for Periodic Signals: Integral Square Solution

I have a task where I want to calculate mean value, effective value, shape factor, and peak factor from a periodic graph.
I found formulas for particular tasks on the Internet. I calculated the mean value, in which I calculated the integral value as the difference of the areas of the two rectangles above and below the axis.
The problem begins with the RMS value, where you want to find the integral square of this waveform. I am asking for help in calculating the effective value.

Hello
Here is the solution to your problem link
best regards
WB

Hello,

szymon1965 wrote:

The problem begins with the RMS value, where you want to find the integral square of this waveform.

just plot the square of this waveform, zero squared is zero, constant squared is also a constant.

best regards