User: Mibj

TODO: note om netværk med videre.

<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>

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<math> x = \sqrt{ 200 } </math>

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• Effekt

<math>P = U \cdot I = {U^2 \over R} = R \cdot I^2</math>

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