Question

-2cos(2/3x-pi/3) I need to describe the sequence of tranformations from the parent fuction cos(x)

Answer 1

you mean you have to graph it by graph the parent function cos?

Answer 2

i have to describe, sequentially, the changes to g(x)=cos(x) that gives f(x) = -2cos(2/3x-pi/3) and what each changes means.

Answer 3

ok, well prepare for a long process. do you want to know or just take steps?

Answer 4

i have the first step -2*g(x) is a vertical stretch and reflection in x-axis

Answer 5

not that. you MUST start at cos x

Answer 6

tell me with cos x, what is the amplitude and period?

Answer 7

amp is 2 and period is 3pi

i think

Answer 8

oh, no, friend, to cos x , amplitude is |1| and period is 2pi

Answer 9

the graph is