😃9.2 週期為2Pi 的傅立葉級數

例1 的解答

Fourier series - Wolfram|AlphaWolfram_Alpha

例1 的圖示

https://www.geogebra.org/m/hHUWNqFk

https://www.geogebra.org/m/fuvqrazv

https://www.geogebra.org/m/vm8ubcme

例3 的解答

Fourier series - Wolfram|AlphaWolfram_Alpha

https://www.geogebra.org/m/afm5nxq7#material/MkNuBKpu

GEOGEBRA EN HTML Daniel Mentrarddmentrard.free.fr

http://dmentrard.free.fr/GEOGEBRA/Maths/FourserrMD.html