Describe the Transformations Required to Obtain the Graph of the Function

question 350

Multiple Choice

Describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x) .
- $$f ( x ) = 2 \cos 3 \pi x ; g ( x ) = \cos \pi x$$

• A) Horizontal shrink by a factor \(\frac { 1 } { 3 }\), vertical stretch by a factor of 2
• B) Horizontal shrink by a factor \(\frac { 1 } { 3 }\), vertical shrink by a factor of \(\frac { 1 } { 2 }\)
• C) Horizontal stretch by a factor 3 , vertical stretch by a factor of 2
• D) Horizontal shrink by a factor \(\frac { 1 } { 2 }\), vertical stretch by a factor of 3

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