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Problem 56
(difficulty: 5/10)
Prove that
\(\displaystyle u_1^2 +\ldots +u_n^2 =u_n u_{n+1} .\)
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Real Analysis 1-4 / Fundaments of Logic (16 problems)
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Real Analysis 1-4 / Limits and Continuity in $R^n$ (16 problems)
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Complex Analysis / Schwarz lemma (12 problems)
Complex Analysis / Caratheodory's theorem (2 problems)
Complex Analysis / Schwarz reflection principle (2 problems)
Complex Analysis / Harmonic functions (8 problems)
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