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

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

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domain of (x^2)/(1+x^2)

domain

\frac{x ^{2}}{1 + x ^{2}}

- \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

\frac{2 x ^{2} - 3 x}{x ^{2} - x - 12}

f (x) = \frac{4 x + 1}{x + 2}

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

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

6 t^{2} + 500 t + 8000

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