What is the domain of f(x)=(7x)/(x^2-1) ?

The domain of f(x)=(7x)/(x^2-1) is x 1

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domain of f(x)=(7x)/(x^2-1)

domain

f (x) = \frac{7 x}{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) = 9 (x - 4)^{\frac{5}{2}}

f (x) = 2 arcsin (\frac{x}{2}) + \frac{π}{4}

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

x^{2} + 11, x \geq 0

y = 2 cos (x + \frac{π}{5})

What is the domain of f(x)=(7x)/(x^2-1) ?
The domain of f(x)=(7x)/(x^2-1) is x<-1\lor-1<x<1\lor x>1