Question

Find Amplitude, Period, Phase Shift & Graph one period.

y= 1/2 Cos(2x+pi)

Answer 1

Amplitude= 1/2
Period= pi
Keypoints: period/4= \[\frac{ \pi }{ 4 }\]
Phase Shift= \[\frac{ \pi }{ 2 }\]

How will I find the remaining keypoints & graph!

Answer 2

what do you mean by keypoints?

Answer 3

the coordinates on the graph. It has to go by increments of pi/4 for the period pi. If that makes any sense

Answer 4

the graph is defined for every x, so just plug in an x and get a y. Do you mean specific points?

Answer 5

x1= pi/2

Answer 6

x2= pi/2+pi/4

Answer 7

and so on until you get to x5.. I just want to make sure im not messing up while adding the fractions