What is the domain of (x^3+2x)/(x^2+1) ?

The domain of (x^3+2x)/(x^2+1) is -infinity <x<infinity

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domain of (x^3+2x)/(x^2+1)

domain

\frac{x ^{3} + 2 x}{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 - 5 + 5 - x

56 x^{2} + 13 x - 3

\frac{cos ( x )}{1 + sin ( x )}

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

f (x) = x 3 - x

What is the domain of (x^3+2x)/(x^2+1) ?
The domain of (x^3+2x)/(x^2+1) is -infinity <x<infinity