A Level

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

Problem

Range of f(x)=4x+2x+1f(x)=4^x+2^x+1 is (a) (0,∞)(0,\infty) (b) (1,∞)(1,\infty) (c) (2,∞)(2,\infty) (d) (3,∞)(3,\infty)

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