User:Ove.lampe/Sandbox

testing

--Ove.lampe (talk) 20:01, 23 April 2008 (UTC)

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

$$f( t ) = \sin( i/50 ) + 0.5\times \sin( i /10 ) + 0.1\times \sin( i )$$

$$N(\mu, \sigma^2)$$

$$N(x) = \frac{1}{\sqrt{2\pi}}*e^{-\mathbf{x}^2/2}$$

$$ \frac{1}{4} \sqrt{\pi} \operatorname{erf}^{2}\left(x\right)$$

$$ e^{-\frac{{(x-2.5)}^2}{2}} +e^{-\frac{{(x+2.5)}^2}{2}} + \frac{1}{40}e^{-200 (2.5+x)^2} + \frac{1}{40} e^{-200 (-2.5+x)^2} $$