Latex how to write a fraction

Sunday 24 May 2020, by Nadir Soualem

frac fraction Latex symbol

$\frac{a}{b}$

$\lim_{x \to a} \frac{f(x)-f(a)}{x-a}$

$\sum_{n=0}^{\infty} \frac{1}{n^2+1}$

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