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Mathematics, 29.08.2019 17:50 sharkboy3780
Let a_1, a_2, a_12 be twelve equally spaced points on a circle with radius 1. find (a_1 a_2)^2 + (a_1 a_3)^2 + + (a_11 a_12)^2. (the sum includes the square of the distance between any pair of points, so the sum includes 12choose2 = 66 terms.)
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Let a_1, a_2, a_12 be twelve equally spaced points on a circle with radius 1. find (a_1 a_2)^2 + (a...
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