[领域] (题目相关领域) 电磁学 [来源] (课本习题、考古题、参考书...) [题目] suppose LaplacianV=0 in a space region # bounded by the closed surface S (a) If the normal derivative V对n偏微分=gradientV对n内积 is specied for every point on S, show that V is determined up to a constant everywhere in #. (b) 10% If the value of V is specied on the portion S1 of the surface S, and the normal derivative is specied on the rest of S, show that V is unique in #. (Hint: Make use of the Green's theorem) [瓶颈] (写写自己的想法，方便大家为你解答) -- 「山鸡，为甚麽你要救我~~」 「我也不知道为甚麽…」 「我好感动…」 「我好後悔…」 --

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