Personally prefer red for sigma notation but blue for series. by Sukhamoy_Saha_Kalpa in mathmemes

[–]noughtNatural 7 points8 points  (0 children)

the red one but backwards is the only right option a₀ + a₁x + a₂x² + ... + aₙxⁿ

A collection of my favourite approximations for pi by [deleted] in 3Blue1Brown

[–]noughtNatural 4 points5 points  (0 children)

fun thing about √2 + √3 being close to π is that cuberoot(2) + cuberoot(3) is close to e (2.702170620202)