TeX
TeX
Scrapbox [$ ]

example:
x+y=1x+y=1
[$ x+y=1]

\frac{a}{b}
ab\frac{a}{b}

\sqrt{x}
x\sqrt{x}

sinx=n=0(1)n(2n+1)!x2n+1\sin x = \sum_{n=0}^{\infty} \frac{(-1)^n}{(2n+1)!} x^{2n+1}