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

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

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

domain

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

- \infty < x < \infty

Solution steps

The function has no undefined points nor domain constraints. Therefore, the domain is

- \infty < x < \infty

f (x) = - x^{6} + 7 x^{2} + 9 x + 12

(x - 1)^{2} - 4

f (x) = \frac{5}{x - 7}

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

f (x) = \frac{1}{x - 12}

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