Let . Determine the least real number such that restricting the domain of to makes…

MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

Let f(x)=x2−6x+8f(x)=x^{2}-6x+8. Determine the least real number aa such that restricting the domain of ff to [a,∞)[a,\infty) makes ff one–to–one. (a) a=4a=4 (b) a=0a=0 (c) a=3a=3 (d) a=2a=2

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