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I have expressions for Maxwell's equations that involve integrals. Are these the ones I should start off with? The reason I ask is I found expressions for Maxwell's equations online that are described by differentials. These seem like easier ground to pick up the problem from. In fact I don't see how I can solve the problem from the integral Maxwell equations. Clearly there must be a way but I don't see it.

This website:

http://en.wikipedia.org/wiki/Maxwell's_equations

has Maxwell's equations in integral and differential form. If I start from differential form then it looks like the equation involving the curl of E does not need to change. The equation involving the curl of H however has an extra term in it which I'm guessing I need to prove is zero under the described problem statement. That equation is:

curl of H = J + dD/dt or curl of B = J + dE/dt expressed in the terms I have used.

So I guess I need to prove that the curl of H can be expressed as -dH/dz only and that the J term is equal to zero.

I'm not real sure where to get started with this problem.