Energy
Energy of cos(2t)
$ E = \int_{t2}^{t1}{|(f(t)|^2}dt $
Power
Power of cos(2t)
$ P = \frac{1}{t2-t1}\int_{t2}^{t1}{|f(t)|^2}dt $
Energy of cos(2t)
$ E = \int_{t2}^{t1}{|(f(t)|^2}dt $
Power of cos(2t)
$ P = \frac{1}{t2-t1}\int_{t2}^{t1}{|f(t)|^2}dt $