statustest
$ latex \displaystyle \sum_{n=1}^\infty \frac{1}{n^2} = \frac{\pi^2}{6}. $
![\sqrt[n]{ab}\frac{-b\pm\sqrt{b^2-4ac}}{2a}](https://s0.wp.com/latex.php?latex=%5Csqrt%5Bn%5D%7Bab%7D%5Cfrac%7B-b%5Cpm%5Csqrt%7Bb%5E2-4ac%7D%7D%7B2a%7D&bg=ffffff&fg=000000&s=0 "\sqrt[n]{ab}\frac{-b\pm\sqrt{b^2-4ac}}{2a}")
[math size=”4″]\int\limits_{\mathbb{R}}\cos\frac{1}{x} dx[/math]
[math size=”4″] \sqrt(2) [/math]
[math]\sqrt[n]{ab}\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/math]
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