# Why $\sum_{n=1}^{+\infty}$ don't work anymore?

Seems that MathJax don't work anymore (Example: $\frac{1}{x^2}>0$)

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Why $\sum_{n=1}^{+\infty}$ don't work anymore?

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Seems that MathJax don't work anymore (Example: $\frac{1}{x^2}>0$)

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$$\sum_{n=1}^{+\infty}$$

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this is a mathematical formula testing mathjax

$$\frac{-b\pm\sqrt{b^2-4ac}}{2a}$$

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Testing ...

$$f_k = f(x_k),: x_k = x^*+kh,: k=-\frac{N-1}{2},\dots,\frac{N-1}{2}$$

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## Comments

Sorry, overlooked something in the webserver configuration, it works now.

@Evgeny, MathJax seems broken again as of 2017-11-03.

@Evgeny ???????????

2018-04, still not working it seems.

work anymore?