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 Exercise [22.07] 
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Roberto

Joined: 03 Jun 2010, 15:18
Posts: 136
Post Exercise [22.07]
Attached my solution


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30 Sep 2010, 17:28
deant

Joined: 12 Jul 2010, 07:44
Posts: 154
Post Re: Exercise [22.07]
In your last line, there's a typo: You omitted the ^2 in the dt^2 term.


...Another way to do this exercise is just to note that:

\frac{d}{dt}\int \overline{\phi}\psi d^3 x = \int \frac{d\left(\overline{\phi}\psi\right)}{dt} d^3 x

and proceed from there.
07 Oct 2012, 11:24
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