Maths Formula Test

[tex]\Large f(x)=\int_{-\infty}^x e^{-t^2}dt[/tex]

Just testing that a funky new plugin to render maths formulae is working :)

Couldn't resist squeezing in another example:

[tex]\sum_{r=1}^{n}r=\frac12 n(n+1)[/tex]

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