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==Energy== | ==Energy== | ||
| − | Energy of cos(2t) | + | Energy of cos(2t) from t= 0 to 2 |
<math>E = \int_{t2}^{t1}{|(f(t)|^2}dt</math> | <math>E = \int_{t2}^{t1}{|(f(t)|^2}dt</math> | ||
| + | |||
| + | <math>E = 2cos(2(2))</math> | ||
| + | |||
| + | <math>E = 2cos(4)</math> | ||
| + | |||
| + | <math>E = 2</math> | ||
==Power== | ==Power== | ||
Revision as of 10:30, 5 September 2008
Energy
Energy of cos(2t) from t= 0 to 2
$ E = \int_{t2}^{t1}{|(f(t)|^2}dt $
$ E = 2cos(2(2)) $
$ E = 2cos(4) $
$ E = 2 $
Power
Power of cos(2t)
$ P = \frac{1}{t2-t1}\int_{t2}^{t1}{|f(t)|^2}dt $
