How to get eqn. 2.5 from John Jackson's electrodynamics
Posted: Mon May 28, 2007 7:19 pm
Can anyone studying John Jackson's Classical Electrodynamics help? I don't know how eqn. 2.5 was obtained.
My method was to substitute eq. 2.4 back to 2.1, then do the derivative. But it did not work. I used Mathematica, still it won't give me the right equation.
Can someone give me an idea?
Thanks
My method was to substitute eq. 2.4 back to 2.1, then do the derivative. But it did not work. I used Mathematica, still it won't give me the right equation.
Can someone give me an idea?
Thanks