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Test some LaTeX

$\sum \int \eta {\frac {\pi }{2}}$

H1 test

H2 test

$w_{\mathrm {eff} }=Ae^{-BR^{2}}$

$\sum \int \eta {\frac {\pi }{\epsilon \sigma }}$

$\int _{0}^{2}\sum 30\alpha \beta \gamma$

Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle \overbrace {1+2+\cdots +200} ^{5150}}

$N=1+fP{\frac {(f-1)^{G+1}-1}{f-2}}$

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test friedell

test date $y=y$ retest

Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle \iint y^{2}dy} Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle \iint y^{2}rrrrdy}

• sand 2

Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle y=nx^{2}+mx+c}

Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle y=nx^{8}+mx^{4}+c}

Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle y=mx+c}

Notes

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