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

The domain of f(x)=(x^2-1)/(x^2+1) is -infinity <x<infinity

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

domain

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

- \infty < x < \infty

Solution steps

The function has no undefined points nor domain constraints. Therefore, the domain is

- \infty < x < \infty

3 x - 2

4 x + 2 y = - 20

y = 2 sin (x)

(- 10, - 9), (0, 1)

f (x) = x^{2} - 6, x \geq 0

What is the domain of f(x)=(x^2-1)/(x^2+1) ?
The domain of f(x)=(x^2-1)/(x^2+1) is -infinity <x<infinity