y" - 54" + 2 = 42 = 0
3
0
0
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On some feasible region, the two functions version of minimax theorems does not hold again. However, by restricting to a proper range, the minimax theorem
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Prove that L is exact, that is, L = df for some f on R 3 , if and only if the integral is independent to the path, which means that it only depends on the end points of Γ.. Check if
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(a) Expand in Fourier sine series.. (b) Sketch