Control objects:

Pulse Train : Fourier Serie of Pulse Train function
Zig Zag     : Fourier Serie of the Ziz Zag function
Pos Sin     : Fourier Serie of the Pos Sin function

Function    : Graph of the selected function (one period)
Periodic    : Graph of the selected periodic function
Current     : Current element n in the Fourier Serie
All         : All the elements up to N in the Fourier Serie
Sum         : Sum of all the elements up to N in the Fourier Serie

FormulaG    : General Fourier Serie formula
FormulaS    : Special Fourier Serie formula of selected function

n =         : Number of the current element in the Fourier Serie
N =         : Current upper limit in the Fourier Serie

Reset       : Reset the application