Consider the function f (at) : 3 (cos (a: E) + 1). Determine its amplitude, period, and midline. 6 Enter the exact answers. For the number 71', either choose 7r from the bar at the top or type in Pi (with a capital P). Ampliude: A : a E \\__.- E a :'t sin {:1} 0 Period: P : a Midline: y : 'iii-utgrea Show your work and explain, in your own words, how you arrived at your answers. Answers with no relevant explanations may receive reduced or no credit. an s: on :i {a q g \\I 1| il || illl II"