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

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

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

domain

\frac{x ^{2} + 1 + x}{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

(- 7, 1), (3, - 5)

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

f (x) = \frac{3}{x ^{2} - 1}

x = - 1, - 2

5 sin (2 x)

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