Question: A cosine function has a horizontal stretch by a factor of 4, and a phase shift of % units to the left. The function is:

A cosine function has a horizontal stretch by a factor of 4, and a phase shift of % units to the left. The function is: O a] f($) = cos(i$ | %) O b] f($) = cos(is: | g) 0 c} f[$) = cos(4:n | g) 0 d} at) 2 cos(4a: + 43\")

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