Let the function f(x) have the form f(x) = Acos(x - C). To produce a graph that matches the one shown below, what must the value of A be?
(picture will be attached)

Question

Let the function f(x) have the form f(x) = Acos(x - C). To produce a graph that matches the one shown below, what must the value of A be?
(picture will be attached)

anonymous · Answer

attachment

johnweldon1993 · Answer

Well you know normally the cos graph oscillates between -1 and 1....this one does it between -2 and 2....so the amplitude is doubled...so A = 2 :)

anonymous · Answer

ooh okay I got it. so for this next picture :  Let the function f(x) have the form f(x) = Acos(x + C). To produce a graph that matches the one shown below, what must the value of C be? would be b?

anonymous · Answer

I mean 3. sorry.

anonymous · Answer

@johnweldon1993

johnweldon1993 · Answer

Well it looks like it is shifted over from 0 to the left a half...so I would say C = 1/2
B = period = looks like it takes 2pi/3

anonymous · Answer

@johnweldon1993 for my study guide, it's multiple choice and i only have 1-4 as answers.
so that's why I thought it was 3.