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Monday, October 25, 2010
9th Swedish Mathematical Society Problems 1969
1. Find all integers m, n such that m3 = n3 + n. 2. Show that tan π/3n is irrational for all positive integers n. 3. a1 ≥ a2 ≥ ... ≥ an is a sequence of reals. b1, b2, b3, ... bn is any rearrangement of the sequence B1 ≥ B2 ≥ ... ≥ Bn. Show that ∑ aibi ≤ &sum aiBi. 4. Define g(x) as the largest value of |y2 - xy| for
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