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

question 170

Multiple Choice

Determine the amplitude or period as requested.
Graph Variations of y = cos x
-Amplitude of $y = \frac { 1 } { 3 } \cos 4 x$

• A) \(\frac { 1 } { 3 }\)
• B) 4
• C) \(\frac { \pi } { 4 }\)
• D) \(6 \pi\)

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