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

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

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domain of f(x)=2sin(x)+cos(2x)

domain

f (x) = 2 sin (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 \cdot 4 - x^{2}

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

\frac{4}{x + 1}

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

2 x^{2} - 7 x - 6

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