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

Interval Notation

(- \infty, \infty)

Solution steps

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

- \infty < x < \infty

f (x) = x^{3} - 4 x^{2}

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

y - 27 = \frac{7}{15} (x + 12)

- 2 cos (x - \frac{π}{2})

f (x) = - x^{2} + 6 x

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