What is the domain of 4x-9 ?

The domain of 4x-9 is -infinity <x<infinity

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domain of 4x-9

domain

4 x - 9

- \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

\frac{x ^{2} - 36}{8 x + 24}

f (x) = arccos (\frac{1}{x})

2^{x} - 1

f (x) = \frac{3 x ^{2} + 5 x - 6}{x ^{2} - 9}

\frac{4}{x ^{2} - 9}