User:Fingolfin/Sandbox

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This is my personal sandbox ;).

Some math mode tests:

[math]\sqrt{2}+\pi^{20+a_i} - \tfrac{23}{42}[/math]


[math]\sum_{k=1}^n k = \frac{k(k+1)}{2}[/math]


[math] \operatorname{erfc}(x) = \frac{2}{\sqrt{\pi}} \int_x^{\infty} e^{-t^2}\,dt = \frac{e^{-x^2}}{x\sqrt{\pi}}\sum_{n=0}^\infty (-1)^n \frac{(2n)!}{n!(2x)^{2n}} [/math]