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Schach [20]
3 years ago
9

Find the basic period and basic frequency of the function g(t)=8cos(10πt)+sin(15πt)

Computers and Technology
1 answer:
Lady_Fox [76]3 years ago
5 0

Answer:

The period is

\frac{2\pi}{5}

The frequency is

\frac{5}{2\pi}

Explanation:

The period of both functions will be LCM of both period.

The period of cos is

\frac{\pi}{5}

The period of sin is

\frac{2\pi}{15}

Let convert each into degrees.

\frac{\pi}{5}  = 36

\frac{2\pi}{15}  = 24

Find the least common multiple between 36 and 24, which is 72.

Convert 72 into radians

72 =  \frac{2\pi}{5}

The period is 2pi/5.

The frequency is equal to

1/period.

so the frequency is

\frac{1}{ \frac{2\pi}{5} }  =  \frac{5}{2\pi}

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