What is the domain of x/(x^2+18) ?

The domain of x/(x^2+18) is -infinity <x<infinity

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domain of x/(x^2+18)

domain

\frac{x}{x ^{2} + 18}

- \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

cos (x^{2} - 1)

f (x) = 4 x^{2} + 3

f (x) = x^{4} + 4 x^{3} - 2 x^{2} - 12 x + 9

f (x) = \frac{7}{3 x + 11}

\frac{5 - x}{- 5 x}

What is the domain of x/(x^2+18) ?
The domain of x/(x^2+18) is -infinity <x<infinity