Answered by : huldar

$\lim_{x \to +\infty} f(x)$

Source : https://www.math-linux.com/latex-26/faq/latex-faq/article/latex-derivatives-limits-sums-products-and-integrals | Last Update : Wed, 23 Sep 20

Answered by : creepy-centipede-egwm0norq0q3

$ \int_{a}^{b} x^2 \,dx $

Source : | Last Update : Mon, 15 Feb 21

Answered by : mitchaloha

$\lim_{x\to\infty} f(x)$

Source : https://www.overleaf.com/learn/latex/Integrals,_sums_and_limits | Last Update : Wed, 09 Dec 20

Answered by : different-dolphin-elqnhxsnwcfl

Inside text: $\sum_{n=1}^{\infty} 2^{-n} = 1$
On its own line: $$\sum_{n=1}^{\infty} 2^{-n} = 1$$

Source : | Last Update : Sat, 07 Nov 20

Answered by : mitchaloha

$\int_0^{2a}{\cos(x)dx}$

Source : | Last Update : Fri, 13 Nov 20

Answered by : obedient-osprey-ui0231cmo9x6

$ \int x \, dx $	% not work in Typora
$ \mathrm{d}x $	% work in Typora
$ \ \mathrm{d}x $	% put a space delimeter before 'dx'

Source : https://tex.stackexchange.com/questions/60545/should-i-mathrm-the-d-in-my-integrals | Last Update : Tue, 25 Oct 22