What is the domain of f(x)=cos^2(x) ?

The domain of f(x)=cos^2(x) is -infinity <x<infinity

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domain of f(x)=cos^2(x)

domain

f (x) = cos^{2} (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 \leq 1

y = x + 3

y = - x^{2} + 1

f (x) = \frac{x - 8}{- 21 - 7 x}

- x - 3

What is the domain of f(x)=cos^2(x) ?
The domain of f(x)=cos^2(x) is -infinity <x<infinity