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

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

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domain of x/(1+x^2)

domain

\frac{x}{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

f (x) = x^{2} - 5 x - 6

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

f (x) = - 2 + ln (x)

f (x) = \frac{x - 2}{3}

f (x) = ln (x^{2} + 4)

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