Let with domain

MATHEMATICS · Single correct · AoPS · Mathematics · Special Functions · Special Functions

Problem

Let h(x)=1xh(x)=\dfrac{1}{x} with domain 0<x≤120<x\le\dfrac12. Which of the following sets represents the range of hh? (a) (0,2](0,2] (b) (2,∞)(2,\infty) (c) [2,∞)[2,\infty) (d) (0,∞)(0,\infty)

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