What is the domain of cos(x) ?

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

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domain of cos(x)

domain

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) = \frac{( 4 x ^{3} - 2 )}{( x ^{3} + 3 )}

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

2^{x - 4}

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

y = x 16 - x^{2}