What is the periodicity of f(x)=cos(2x)*cos(x) ?

The periodicity of f(x)=cos(2x)*cos(x) is 2pi

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periodicity of f(x)=cos(2x)*cos(x)

periodicity

f (x) = cos (2 x) \cdot cos (x)

2 π

Solution steps

cos (2 x) \cdot cos (x)

is composed of the following functions and periods:

cos (2 x)

with periodicity of

\frac{2 π}{2}

The compound periodicity is:

= 2 π

f (x) = (2 - x) (x - 3) x

f (x) = \frac{2 x}{x ^{2} - 16}

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

f (x) = x + 20

f (x) = sin^{4} (3 x)

What is the periodicity of f(x)=cos(2x)*cos(x) ?
The periodicity of f(x)=cos(2x)*cos(x) is 2pi