Find the domain of the function .

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

Problem

Find the domain of the function f(x)=3x+7x2−4x−12f(x)=\dfrac{3x+7}{x^2-4x-12}. (a) R∖{−2,6}\mathbb R\setminus\{-2,6\} (b) R∖{−2,6,−73}\mathbb R\setminus\{-2,6,-\dfrac73\} (c) R∖{−6,2}\mathbb R\setminus\{-6,2\} (d) (−∞,−2)∪(6,∞)(-\infty,-2)\cup(6,\infty)

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