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\title{Random Math}
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$$\oiint ~\theta{}d\theta = \frac{\theta}{2}$$
$$\iiint ~\theta{}d\theta = \frac{\theta}{2}$$

$$(\frac{\pi}{2})$$
$$\textrm{bigl} : \bigl[ \frac{\pi}{2} \bigr] : \textrm{bigr}$$
$$\textrm{Bigl} : \Bigl\{ \frac{\pi}{2}\Bigr\} : \textrm{Bigr}$$
$$\textrm{biggl} : \biggl( \frac{\pi}{2}\biggr) : \textrm{biggr}$$
$$\textrm{Biggl} : \Biggl\{ \frac{\pi}{2} \Biggr\} : \textrm{Biggr}$$

$$1+\frac{a}{1+\cfrac[l]{left-align}{\biggl(1 + \sqrt{left-align}\biggr)}}$$

$$1+\cfrac[r]{\sqrt[5]{right-align}}{1 + right-align}$$
boxed formula outside display mode : $\boxed{\eta \leq \bigl\{\frac{\pi}{2}\bigr\}}$
%outside : $a \xrightarrow[2]{1} b \xleftarrow[4]{3} c$ : display
$$a \xrightarrow[2]{1} b \xleftarrow{3} c$$
$$\sqrt[3]{x \star x}~\xrightarrow{\beta} x$$

sqrt outside display mode : $\sqrt[5]{4 \star 4 \star 2} \to \sqrt[3]{4 \star 2}\to \sqrt{4}$

$$output = \sqrt[5]{\frac{100+int}{100} ~\star input}$$

$$\frac{3}{2} ~\simeq \boxed{\eta \leq \Biggl[\frac{\sqrt{\pi}}{2}\Biggr] \xleftarrow{\theta} ~\Theta} ~\succapprox \cfrac[l]{4}{4+4}$$


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