What is the domain of (3x^2)/(x^2-1) ?

The domain of (3x^2)/(x^2-1) is x 1

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domain of (3x^2)/(x^2-1)

domain

\frac{3 x ^{2}}{x ^{2} - 1}

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

Interval Notation

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

Solution steps

Find undefined (singularity) points:

x = 1, x = - 1

The function domain

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

f (x) = y x^{2} - 4 y - x^{2} = 0

f (x) = x + 1, - 2 \leq x \leq 5

f (x) = - 2 x^{2} + 8 x - 1

\frac{1}{x ^{6}}

f (x) = 1 x + 0 - 4

What is the domain of (3x^2)/(x^2-1) ?
The domain of (3x^2)/(x^2-1) is x<-1\lor-1<x<1\lor x>1