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

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

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

domain

\frac{2 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

f (x) = arcsin (3 x - 4 x^{3})

y = 3 x - 2

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

f (x) = 6^{- x}

f (x) = - x^{2} + x + 2

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