What is the domain of f(x)=sqrt(x^2-18) ?

The domain of f(x)=sqrt(x^2-18) is x = 3sqrt(2)

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domain of f(x)=sqrt(x^2-18)

domain

f (x) = x^{2} - 18

x \leq - 32 or x \geq 32

Interval Notation

(- \infty, - 32] \cup [32, \infty)

Solution steps

Find non-negative values for radicals:

x \leq - 32 or x \geq 32

The function domain

x \leq - 32 or x \geq 32

f (x) = 2 csc (3 (x - \frac{π}{4}))

\frac{- 5 x}{x - 8}

\frac{x}{x ^{2} + 5}

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

f (x) = x^{3} + 2 x^{2} + x - 7

What is the domain of f(x)=sqrt(x^2-18) ?
The domain of f(x)=sqrt(x^2-18) is x<=-3sqrt(2)\lor x>= 3sqrt(2)