What is the domain of x^2-1 ?

The domain of x^2-1 is -infinity <x<infinity

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domain of x^2-1

domain

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{1}{x + 1}

y = \frac{1 - 6 x}{3}

(- 3, 0), (0, 4)

(- 10.3) (- 4.5)

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