Mathematics

Mathematics

Problem

Find the domain of the function f(x)=2x+5x2−9f(x)=\dfrac{2x+5}{x^{2}-9}. a) (−∞,−3)∪(3,∞)(-\infty,-3)\cup(3,\infty) b) R∖{3}\mathbb{R}\setminus\{3\} c) R∖{−3,3}\mathbb{R}\setminus\{-3,3\} d) R∖{−3,−52,3}\mathbb{R}\setminus\{-3,-\dfrac{5}{2},3\}

Browse the problem library