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| − | <math>E = int_0^{2pi}{cos(2t)}dt</math> | + | <math>E = \int_0^{2pi}{cos(2t)}dt</math> |
Revision as of 10:04, 5 September 2008
Energy
Energy of cos(2t)
$ E = \int_0^{2pi}{cos(2t)}dt $
