What is the domain of f(x)=(2x)/(x^2-x-2) ?

The domain of f(x)=(2x)/(x^2-x-2) is x 2

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domain of f(x)=(2x)/(x^2-x-2)

domain

f (x) = \frac{2 x}{x ^{2} - x - 2}

x < - 1 or - 1 < x < 2 or x > 2

Interval Notation

(- \infty, - 1) \cup (- 1, 2) \cup (2, \infty)

Solution steps

Find undefined (singularity) points:

x = 2, x = - 1

The function domain

x < - 1 or - 1 < x < 2 or x > 2

f (x) = \frac{x ( x - 3 ) - 1}{4}

x^{2} - 7 x + 6

f (x) = lo g_{10} (8 - 5 x)

f (x) = \frac{x}{x ^{3} - 125}

f (x) = \frac{2 x + 3}{x + 2}

What is the domain of f(x)=(2x)/(x^2-x-2) ?
The domain of f(x)=(2x)/(x^2-x-2) is x<-1\lor-1<x<2\lor x>2