The odd function FX defined on R When x > 0, FX = X-2 (1) The analytic expression of FX on R is written by piecewise function; (2) Finding the inequality FX

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• 15. 1. Let f (x) s be an odd function on R and satisfy f (x + 2) = - f (x). When 0 ≤ x ≤ 1, f (x) = x, then f (3.5) =? 2. If f (1 / x) = 1 / (x + 1), then f (x) =?
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