Choose the definition for the function

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

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.