Let f (x) = A / x + A, and f (2) = 3 / 2, then f (1) is equal to

F (2) = A / 2 + a = 3A / 2 = 3 / 2, so a = 1, so f (x) = 1 / x + 1, f (1) = 1 / 1 + 1 = 2

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