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?

A.f(x)=−10cos(3x)+10

B.f(x)=−10cos(2π3x)+10

C.f(x)=10cos(3x)−10

D.f(x)=10cos(2π3x)+10

...?

Guest May 30, 2018

edited by
Guest
May 30, 2018

#1**0 **

-10 cos ( 2 pi x / 3) + 10 I believe it is your second choice, though there is a typo.

ElectricPavlov May 30, 2018