| Line 9: | Line 9: | ||
<math>E\infty=.5(\infty^2-0^2)=\infty</math> | <math>E\infty=.5(\infty^2-0^2)=\infty</math> | ||
| − | <math>P\infty= | + | <math>P\infty=lim_{T \to \infty} \ 1/(2T)\int_{-T}^{T} |x(t)|^2\,dt</math> |
<math>P\infty=lim_{T \to \infty} \ 1/(2T)\int_{-T}^T |\sqrt{t}|^2\,dt=\int_0^T t\,dt</math> | <math>P\infty=lim_{T \to \infty} \ 1/(2T)\int_{-T}^T |\sqrt{t}|^2\,dt=\int_0^T t\,dt</math> | ||
| Line 26: | Line 26: | ||
<math>E\infty=\infty</math> | <math>E\infty=\infty</math> | ||
| − | <math>P\infty= | + | <math>P\infty=lim_{T \to \infty} \ 1/(2T)\int_{-T}^{T} |x(t)|^2\,dt</math> |
| − | <math>P\infty= | + | <math>P\infty=lim_{T \to \infty} \ 1/(2T)\int|1|^2dt</math> |
| − | <math>P\infty= | + | <math>P\infty=lim_{T \to \infty} \ 1/(2T)*t|</math>(from <math>-T</math> to <math>T</math>) |
| − | <math>P\infty= | + | <math>P\infty=lim_{T \to \infty} \ 1/(2T)*(T-(-T))</math> |
| − | <math>P\infty= | + | <math>P\infty=lim_{T \to \infty} \ 1</math> |
<math>P\infty=1</math> | <math>P\infty=1</math> | ||
[https://kiwi.ecn.purdue.edu/rhea/index.php/Computing_E_infinity_and_P_infinity Return to Computing E infinity and P infinity] | [https://kiwi.ecn.purdue.edu/rhea/index.php/Computing_E_infinity_and_P_infinity Return to Computing E infinity and P infinity] | ||
Revision as of 07:28, 17 June 2009
Work By Ryne Rayburn (rrayburn)
$ x(t)=\sqrt{t} $
$ E\infty=\int_{-\infty}^\infty |x(t)|^2\,dt $
$ E\infty=\int_{-\infty}^\infty |\sqrt{t}|^2\,dt=\int_0^\infty t\,dt $ (due to sqrt limiting to positive Real numbers) $ E\infty=.5*t^2| $(from $ 0 $ to $ \infty $) $ E\infty=.5(\infty^2-0^2)=\infty $
$ P\infty=lim_{T \to \infty} \ 1/(2T)\int_{-T}^{T} |x(t)|^2\,dt $
$ P\infty=lim_{T \to \infty} \ 1/(2T)\int_{-T}^T |\sqrt{t}|^2\,dt=\int_0^T t\,dt $ $ P\infty=lim_{T \to \infty} \ 1/(2T)*.5t^2| $(from $ 0 $ to $ T $) $ P\infty=lim_{T \to \infty} \ 1/(2T)*(.5T^2) $ $ P\infty=lim_{T \to \infty} \ (.25T)=\infty $
$ x(t)=\cos(t)+\jmath\sin(t) $
$ |x(t)|=|\cos(t)+\jmath\sin(t)|=\sqrt{\cos^2(t)+\sin^2(t)}=1 $
$ E\infty=\int_{-\infty}^\infty |x(t)|^2\,dt $
$ E\infty=\int_{-\infty}^\infty |1|^2\,dt=t| $(from $ -\infty $ to $ \infty $) $ E\infty=\infty $
$ P\infty=lim_{T \to \infty} \ 1/(2T)\int_{-T}^{T} |x(t)|^2\,dt $
$ P\infty=lim_{T \to \infty} \ 1/(2T)\int|1|^2dt $ $ P\infty=lim_{T \to \infty} \ 1/(2T)*t| $(from $ -T $ to $ T $) $ P\infty=lim_{T \to \infty} \ 1/(2T)*(T-(-T)) $ $ P\infty=lim_{T \to \infty} \ 1 $ $ P\infty=1 $
