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

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

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

periodicity

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

π

Solution steps

cos (2 x) cos (4 x)

is composed of the following functions and periods:

cos (2 x)

with periodicity of

\frac{2 π}{2}

The compound periodicity is:

= π

f (x) = \frac{cos ( x ) - sin ( x )}{cos ( x ) + sin ( x )}

y = \frac{1}{x ^{2} - 9}

y = \frac{x ^{2} - 1}{x ^{2} - 4}

y = x^{2} - 12 x + 46

y = x^{3} + 2 x^{2} - x - 2

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