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| − | ==<math>X( | + | ==<math>X(\omega)=\int_{-\infty}^{\infty}x(t)e^{-jwt}dt</math>== |
| + | |||
| + | <math>x(t)=t^2 u(t)</math> | ||
| + | |||
| + | <math>X(t)</math> | ||
Revision as of 09:34, 3 October 2008
$ X(\omega)=\int_{-\infty}^{\infty}x(t)e^{-jwt}dt $
$ x(t)=t^2 u(t) $
$ X(t) $
