Find the range of the function

MATHEMATICS · Single correct · A Level · Mathematics · Exponentials and logarithms · Exponentials and logarithms

Problem

Find the range of the function f(x)=2x−3f(x)=2^x-3, where x∈Rx\in\mathbb{R}. (a) [−3,∞)[-3,\infty) (b) R\mathbb{R} (c) (−3,∞)(-3,\infty) (d) (−∞,−3](-\infty,-3]

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