Show that, for any integer n 1, a n n = 1. Interpret this result. b n 0 = 1. Interpret

Chapter 2, Problem 2.68

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Show that, for any integer n 1, a n n = 1. Interpret this result. b n 0 = 1. Interpret this result. c n r = n nr . Interpret this result. d n i=0 n i = 2n . [Hint: Consider the binomial expansion of (x + y)n with x = y = 1.]

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