Let . What is the smallest interval containing on which becomes…

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Let f(x)=x2+2x+5f(x)=x^{2}+2x+5. What is the smallest interval containing x=1x=1 on which ff becomes invertible? (a) [−1,∞)[-1,\infty) (b) [1,∞)[1,\infty) (c) (−∞,1](-\infty,1] (d) [0,∞)[0,\infty)

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