Not sure about how relevant this in reality, but when it comes to alternating series, this might be relevant. For example the Fourier series expansion of cosine and other trig function?

[–] EatBorekYouWreck@lemmy.world 3 points 2 years ago* (last edited 2 years ago) (1 children)

But then it is more natural to use the complex version of the Fourier series, which has a neat symmetric notation

[–] Foofighter@discuss.tchncs.de 1 points 2 years ago (1 children)

True, but normally, you'd introduce trig functions before complex numbers. Anyhow: I appreciate the meme and the complete over the top discussion about it :D

[–] EatBorekYouWreck@lemmy.world 1 points 2 years ago

Complex numbers ftw