What is the domain of (x+2)/(x^2-1) ?

The domain of (x+2)/(x^2-1) is x 1

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domain of (x+2)/(x^2-1)

domain

\frac{x + 2}{x ^{2} - 1}

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

Solution steps

Find undefined (singularity) points:

x = 1, x = - 1

The function domain

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

f (x) = 5 x

f (x) = x^{4} + 4 x^{3}

f (x) = \frac{2 x + 3}{x - 1}

f (x) = \frac{10 x ^{4} - 3}{2 x + 5 x ^{2}}

6 x^{4} - 8 x^{3} - 87 x^{2} + 90 x + 24

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