If the function is periodic find the midline amplitude and p
     If the function is periodic, find the midline, amplitude and period for it, if not, say not periodic.   
  
  Solution
(a) Solution : The function is periodic.
(a) Midline
y = (maximum+minimum)/2 = [5+(-1)] / 2
or
y = 2 is the midline. The horizontal axis about which the graph is periodic is known as midline.
Ans
Amplitude
A = (maximum-minimum)/2 = [5-(-1)] / 2
A = 3 Amplitude Ans
Period = 2. Ans
(b) Solution : The function is not periodic.

