# Drawing cos graph

• August 23rd 2012, 08:12 PM
drake01
Drawing cos graph
hi all,
how would the graph of y=2 cos x + 2 on the domain 0<=x<=2Pi would look?
• August 23rd 2012, 08:23 PM
Prove It
Re: Drawing cos graph
Quote:

Originally Posted by drake01
hi all,
how would the graph of y=2 cos x + 2 on the domain 0<=x<=2Pi would look?

You should know the basic shape of the cosine graph. The period is \displaystyle \begin{align*} 2\pi \end{align*}, the amplitude is 2 which means the basic graph is stretched by a factor of 2 vertically, and the mean value is 2, so the graph is moved up by 2 units.