Markdown & Latex study notes, qwq

index

a b-th power.
$a^b$
Results are as follows
$ a ^ b $
$a^{b}$
following effects
$ {A ^} $ B
$ PS: The second index may be used for more than one, but only a first index. $

fraction

b points a.
$\frac{a}{b}$
Results are as follows
$ \ frac {a} {b } $

root

$\sqrt[a]{b}$
Results are as follows
$ \ sqrt [a] {b } $