# Thread: Find the period of each function, then sketch the graphs

1. ## Find the period of each function, then sketch the graphs

Find the period of each function, then sketch the graphs

a. y = 4sin2x

b. y = -4cos2x

I have no idea what that means..

2. Hello Draft
Originally Posted by Draft
Find the period of each function, then sketch the graphs

a. y = 4sin2x

b. y = -4cos2x

I have no idea what that means..
These are very basic questions. What have you been taught about sine and cosine functions? Have you any notes that give you a definition of the period of a trig function, or any sketch-graphs?