Answer:
(0, 2) (pi/4, 1) (pi/2, 0) (3pi/4, 1) (pi, 2)
Step-by-step explanation:
New period is 2pi/2 = pi
Take intervals of new period/4 = pi/4
For the first positive cycle, take:
x= 0,
x= pi/4,
x= 2pi/4 = pi/2
x= 3pi/4
x= 4pi/4 = pi
Find the corresponding y values on the calculator (your calculator should be on radian mode)
x= 0, y= cos[2(0)]+1 = 2
x= pi/4 y= cos[2(pi/4)]+1 = 1
x = pi/2 y= cos[2(pi/2)]+1 = 0
x = 3pi/4 y= cos[2(3pi/4)]+1 = 1
x= pi y= cos[2(pi)]+1 = 2
(0, 2) (pi/4, 1) (pi/2, 0) (3pi/4, 1) (pi, 2)
These 5 coordinates should be enough for one cycle, copy the same cycle for "pi to 2pi" and the negative x-axis
