| Line 7: | Line 7: | ||
E= <math>\int_{1}^{3}\ x ^4\, dx , \,\!</math> | E= <math>\int_{1}^{3}\ x ^4\, dx , \,\!</math> | ||
E= <math>\frac{1}{5}\!</math> {<math>(3^5)\!</math> - <math>(1^5)\!</math>} | E= <math>\frac{1}{5}\!</math> {<math>(3^5)\!</math> - <math>(1^5)\!</math>} | ||
| − | E= <math>\frac{1}{5}\!</math>*<math>243-1\!</math> | + | E= <math>\frac{1}{5}\!</math>*<math>(243-1)\!</math> |
E= <math>48.4\!</math> | E= <math>48.4\!</math> | ||
Revision as of 16:50, 5 September 2008
Energy and Power
x(t)= $ x^2\! $
Energy calculation
E= $ \int_{1}^{3}\ |x ^2|^2\, dx , \,\! $ E= $ \int_{1}^{3}\ x ^4\, dx , \,\! $ E= $ \frac{1}{5}\! $ {$ (3^5)\! $ - $ (1^5)\! $} E= $ \frac{1}{5}\! $*$ (243-1)\! $ E= $ 48.4\! $
