Can somebody help me.
Let the function h be defined by h(x) = 2 cos(10x) + 12. The maximum value of h is attained at which of the following values of x?
A. pi over 5
B. pi over 10
C. pi over 15
D. pi over 20
E. pi over 40

Question

Can somebody help me.
Let the function h be defined by h(x) = 2 cos(10x) + 12. The maximum value of h is attained at which of the following values of x?
A. pi over 5
B. pi over 10
C. pi over 15
D. pi over 20
E. pi over 40

anonymous · Answer

i know how it works in trigonometry

kayders1997 · Answer

I would just do trial and error plug in the values they give you and see which one is largest

anonymous · Answer

max of cosine is 1 at $\theta =0,2\pi,4\pi,...$

anonymous · Answer

set $$10x=2\pi$$ solve for $x$ in one step