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

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

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

domain

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

- \infty < r < \infty

Interval Notation

(- \infty, \infty)

Solution steps

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

- \infty < r < \infty

2 x^{3} + 8 x^{2} - 8 x - 32

f (x) = \frac{1}{x ^{2} - 6 x - 7}

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

\frac{9 x}{x ^{2} + x - 2}

y = - x^{2} + 4

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