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Popular >

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

Solution

periodicity

x (n) = cos (3 n)

Solution

\frac{2 π}{3}

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}

Popular Examples

asymptotes of f(x)=(x^2+12)/(x-2)asymptotes

f (x) = \frac{x ^{2} + 12}{x - 2}

range of y=-sqrt(x+4)+6 range

y = - x + 4 + 6

domain of f(x)=(-5.4)(-5.3)(-5.2)(-5.1)domain

f (x) = (- 5.4) (- 5.3) (- 5.2) (- 5.1)

range of (2+x)/(x^2(1-x))range

\frac{2 + x}{x ^{2} ( 1 - x )}

extreme f(x)=2x^3-24x-6 extreme points

f (x) = 2 x^{3} - 24 x - 6

Frequently Asked Questions (FAQ)

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