The graph of f(x)=3x (red) is increasing. the graph of f(x) =-3x + 9 (blue) is decreasing. Increasing functions travel upwards from left to right; asxincreases,ydecreases. With decreasing functions, as you move from left to right, the graph goes downward. In other words, asxincreas...
Thesine functionandcosine functioncan be used to approximate a square wave function. As an example, the following graph is the sine function f(x) = sin 2πx + (1/3) sin 3 (2πx) + (1/5) sin 5 (2πx) + (1/7) sin 7 (2πx) + (1/9) sin 9 (2πx) + (1/11) sin...
I still dont get trig and the sine and cosine graphs, i guess i may never learn it nice site Murray says: 2 Jun 2009 at 8:57 am [Comment permalink] Hi Eileen. Don't give up on trigonometry! Feel free to use the "Comments? Questions?" facility in Interactive Mathematics to ask ...