That makes no sense. If they defined f as f(x) = 1 + sin(2x), then why would part (a) say, "Show that f(x) can be expressed as 1 + sin(2x)"???Thank you! The part missing is f(x)=1+sin2x
IGNORE f(x)! It doesn't say anything about using f to graph g.i don't understand how to find the key points of 1+cosx. I don't know which is the maximum point if f(x)=1+2sinx.
Hello. Can you see that 1 is added to the y-coordinate of every point on the graph of y=cos(x)? In other words, the graph of y=cos(x)+1 is the graph of cosine shifted vertically upward one unit.... i don't understand how to find the key points of 1+cosx ...