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मान लीजिए कि B(0,1) = {(x,y) ∈ ℝ2|x2 + y2 < 1} ℝ2 में खुला इकाई डिस्क है, ∂B(0, 1) B(0,1) की परिसीमा को दर्शाता है, और v ∂B(0, 1) के लिए इकाई बाह्य अभिलम्ब है। मान लीजिए f : ℝ2 → ℝ एक दिया गया संतत फलन है। न्यूनीकरण समस्या

जिसमें u ∈ C1 है, का ऑयलर-लैग्रेंज समीकरण है

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सही उत्तर (3) है।

हम बाद में हल अपडेट करेंगे।
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