Question

How do I figure this out?

Answer 1

Answer:

You can figure this out by seeing this max and min lengths, which is 1 and -1, and the distance of which the graph goes upward and downward, which is 2pi. So, the answer has to be sin2x

Step-by-step explanation:

Answer 2

Answer: i learned about this but i'm not the best at it so i think the answer is C. which is the third one  

explanation: hope this helps and if im wrong VERY SORRY