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Popular Functions >

periodicity of x(n)=cos(3n)

Solution

periodicity

Solution

\frac{2 π}{3}

+1

Decimal

2.09439 \dots

Solution steps

Periodicity of

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

Periodicity of

cos (x)

is

2 π

= \frac{2 π}{∣ 3 ∣}

Simplify

= \frac{2 π}{3}

Graph

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Frequently Asked Questions (FAQ)

What is the periodicity of x(n)=cos(3n) ?
The periodicity of x(n)=cos(3n) is (2pi)/3