What is the domain of f(x)= 4/(x^2+1) ?

The domain of f(x)= 4/(x^2+1) is -infinity <x<infinity

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domain of f(x)= 4/(x^2+1)

domain

f (x) = \frac{4}{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) = \frac{2}{5 + x}

\frac{x + 1}{x - 4}

f (x) = (3 - 2 x)

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

f (x) = x^{3} - 6 x^{2} - 15 x + 4

What is the domain of f(x)= 4/(x^2+1) ?
The domain of f(x)= 4/(x^2+1) is -infinity <x<infinity