#1**+2 **

the period is 3.14 (the distance from one peak to the next)

the amplitude would be 2 as it is the distance between the centre point and peak

the frequency is 1/3.14

the equation of the midline of the function would be x=-3

ignore if blatantly wrong haha

HoldMyBeer Jan 28, 2019

#2**+1 **

You are close...HMB....!!!

The equation of the midline is y = - 3

3. The equation is

y = 2cos (2x) - 3

CPhill Jan 28, 2019