ch33-p102 - 102 We take the derivative with respect to x of...

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22 2 . EE B B x xxx t x t ∂∂ ∂ ∂ ⎛⎞ == −= ⎜⎟ ⎝⎠ Now we differentiate both sides of Eq. 33-18 with respect to t : F H G I K J =− = F H G I K J = t B x B xt t E t E t 2 00 2 2 εµ . Substituting 222 Ex Bx t = from the first equation above into the second one, we get 2 2 2 2 2 2 2 1 . E E E c tx t x x =⇒ = = Similarly, we differentiate both sides of Eq. 33-11 with respect to t 2 , EB x tt and differentiate both sides of Eq. 33-18 with respect to
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