v.Ẽ = 0, (7.6a) V xẾ = - jøµÃ, V.à = 0, (7.6b) (7.6c) V xà = jwe,Ẽ. (7.6d) CHAPTER 7 PLANE-WAVE PROPAGAT n view of Eq. (7.6a), the use of Eq. (7.11) in Eq. (7.10) g v³Ẽ + w³µe‚Ẽ = 0,
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