Need answers are
a. 0, 5pi/4
b. 7pi/6, 11pi/6
c. 3pi/4, 7pi/4
d. pi/4, 5pi/4

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.