Give the amplitude or period as requested.
-Period of $y = 3 \cos \frac { 1 } { 4 } x$
A) 3
B) $\frac { 3 \pi } { 4 }$
C) $8 \pi$
D) $\frac { \pi } { 4 }$

Name: Give the amplitude or period as requested. -Period of $y = 3 \cos \frac { 1 } { 4 } x$ A) 3 B) $\frac { 3 \pi } { 4 }$ C) $8 \pi$ D) $\frac { \pi } { 4 }$
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Question

Quizplus · Accepted Answer

The period of a cosine function of the form $y = a \cos(bx)$ is given by $\frac{2\pi}{|b|}$. Here, $b = \frac{1}{4}$, so the period is $\frac{2\pi}{1/4} = 8\pi$.

Give the Amplitude or Period as Requested y=3cos⁡14xy = 3 \cos \frac { 1 } { 4 } xy=3cos41​x

Give the Amplitude or Period as Requested $y = 3 \cos \frac { 1 } { 4 } x$