What is the periodicity of f(x)=-4cos(5x-9)-7 ?

The periodicity of f(x)=-4cos(5x-9)-7 is (2pi)/5

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periodicity of f(x)=-4cos(5x-9)-7

periodicity

f (x) = - 4 cos (5 x - 9) - 7

\frac{2 π}{5}

Solution steps

Periodicity of

a \cdot cos (b x + c) + d = \frac{periodicity of cos ( x )}{∣ b ∣}

Periodicity of

cos (x)

2 π

= \frac{2 π}{∣ 5 ∣}

Simplify

= \frac{2 π}{5}

36 - x^{2}

- x^{2} + x + 2

f (x) = - \frac{4}{x - 3} - 1

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

f (x) = \frac{x ^{2}}{x ^{2} + 9}

What is the periodicity of f(x)=-4cos(5x-9)-7 ?
The periodicity of f(x)=-4cos(5x-9)-7 is (2pi)/5