What is the periodicity of f(x)=cos(4x)*cos(2x) ?

The periodicity of f(x)=cos(4x)*cos(2x) is pi

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periodicity of f(x)=cos(4x)*cos(2x)

periodicity

f (x) = cos (4 x) \cdot cos (2 x)

π

Solution steps

cos (4 x) \cdot cos (2 x)

is composed of the following functions and periods:

cos (4 x)

with periodicity of

\frac{2 π}{4}

The compound periodicity is:

= π

f (x) = \frac{1 - 2 x}{x + 4}

f (x) = x^{2} + 11 x - 18

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

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

y, y = \frac{cos ( 2 θ )}{1 - sin ( 2 θ )}

What is the periodicity of f(x)=cos(4x)*cos(2x) ?
The periodicity of f(x)=cos(4x)*cos(2x) is pi