Wanna do some math?
Got some basic Calculus question for you.=^)
Try them if you got them skillz
Protip: Hospital rule.
In the third one, replace tan x with its Taylor polynomial approximation: tan x = x + x^3 / 3 + ..., so tan x / x = 1 + x^2 / 3 + ..., and replacing 1/x^2 with n, you get (1 + (1/3) * (1/n))^n, the limit of which is e^(1/3)