How to post using latex

Tesing is successful.

This formula $f(x) = x^2$ is an example.

$ \lim_{x\to 0}{\frac{e^x-1}{2x}} \overset{\left[\frac{0}{0}\right]}{\underset{\mathrm{H}}{=}} \lim_{x\to 0}{\frac{e^x}{2}}={\frac{1}{2}} $

$y=x^2$

$e^{i\pi} + 1 = 0$

$e^x=\sum_{i=0}^\infty \frac{1}{i!}x^i$

$\frac{n!}{k!(n-k)!} = {n \choose k}$

$A_{m,n} = \begin{pmatrix} a_{1,1} & a_{1,2} & \cdots & a_{1,n}
a_{2,1} & a_{2,2} & \cdots & a_{2,n}
\vdots & \vdots & \ddots & \vdots
a_{m,1} & a_{m,2} & \cdots & a_{m,n} \end{pmatrix}$

Tables:

First column name  | Second column name 
-------------------|------------------
Row 1, Col 1       | Row 1, Col 2 
Row 2, Col 1       | Row 2, Col 2 

See this Blog

See this blog

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