What is the domain of 4/(x^2+1) ?

The domain of 4/(x^2+1) is -infinity <x<infinity

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domain of 4/(x^2+1)

domain

\frac{4}{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

2 x - 5

3 ln (x)

y = (x - 3)^{2}

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

\frac{8 x}{7 x - 3}

What is the domain of 4/(x^2+1) ?
The domain of 4/(x^2+1) is -infinity <x<infinity