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Question

A cosine function has a period of 3, a maximum value of 20, and a minimum value of 0. The function is a reflection of its parent function over the x-axis.

Which function could be the function described?



f(x)=10cos(3x)−10

f(x)=10cos(2π3x)+10 <my choice

f(x)=−10cos(2π3x)+10

f(x)=−10cos(3x)+10
8 years ago

Answers

plumpycat
There must be some typos in the above.
The correct answer is
f(x) = -10cos((2π/3)x) + 10
8 years ago

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