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

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

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

domain

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

- \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) = \frac{3 x - 2}{5}

25 - x^{2} + x + 2

f (x) = 2 x^{3} - 30 x^{2} + 144 x + 8

f (x) = \frac{6 x ^{2}}{x - 6}

f (x) = \frac{x}{x + 1}

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