| Line 5: | Line 5: | ||
<math>x(t) = \cos(4t)</math> | <math>x(t) = \cos(4t)</math> | ||
| − | <math>\int_{t1}^{t2} |x(t)|\, dt</math> | + | <math>\int_{t1}^{t2} |x(t)|^2\, dt</math> |
Revision as of 15:47, 4 September 2008
I assumed $ x(t)=\cos(4t) $ and time interval 0 to $ 5\pi $
Energy
$ x(t) = \cos(4t) $
$ \int_{t1}^{t2} |x(t)|^2\, dt $
