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

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

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

domain

\frac{3 x ^{2}}{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

\frac{( 3 x ^{2} + x )}{x ^{2} + 4}

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

f (p) = \frac{p - 3}{p ^{2} + 4 p - 21}

f (x) = \frac{x - 7}{x}

f (x) = \frac{4}{3 n ^{2} - n - 2}

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