What is the domain of cos(cos(x)) ?

The domain of cos(cos(x)) is -infinity <x<infinity

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domain of cos(cos(x))

domain

cos (cos (x))

- \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) = x^{2} (x^{2} + 9) (x^{3} + 2 x)

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

57 + 30 cos (\frac{π}{6} t)

- (7)^{x}

f (x) = (6 - x)

What is the domain of cos(cos(x)) ?
The domain of cos(cos(x)) is -infinity <x<infinity