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

x^{4} + 12 x^{2} + 42

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

y = ln (x + 5)

f (x) = \frac{2}{x - 8} + 9

f (x) = \frac{1}{5 x + 1}

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