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2.5 The Precise Definition of a Limit OPEN Turned in automatically when due ITEMS INFO LEARNING RESOURCES CONCEPT REVIEW 14. Help me with this # 1 Let f(x) = x3 - 2x. To prove that lim f(x) = -1, we proceed as follows. Given any e > 0, we need to find a number 6 > 0 such that if 0