1. Determine the following sets. The symbols An and U An mean to take the intersection or union n=1 of the sets A₁, A2,... [0,1/n] (a) (b) WL ∞ n=1 ∞ (0, 1/n) n=1 n=1 Recall that in interval notation [a, b] = {x\a ≤ x ≤ b]. Recall that in interval notation (a, b) = {x\a < x < fab

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