What is the periodicity of f(x)=cos(5/13 pi^2t) ?

The periodicity of f(x)=cos(5/13 pi^2t) is (26)/(5pi)

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periodicity of f(x)=cos(5/13 pi^2t)

periodicity

\frac{26}{5 π}

Decimal

1.65521 \dots

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}{\frac{5 π ^{2}}{13}}

Simplify

= \frac{26}{5 π}

What is the periodicity of f(x)=cos(5/13 pi^2t) ?
The periodicity of f(x)=cos(5/13 pi^2t) is (26)/(5pi)