TRIGONOMETRIC FUNCTIONS Graphing And Analysis (Page 4 of 13)

Now press GRAPH key. to see the graph of the function with our custom window. Observe that one period fits "perfectly" which confirms that our earlier analysis is correct. 

To look at some sample ordered pairs on the graph of the function, use TRACE to move a cursor that will "travel along" the graph either left or right. The cursor is moved one pixel at a time using the left and right arrow keys. At each pixel center, the x-coordinate is used to evaluate the function, and then the results are displayed. Press the 2nd key and then an arrow key to "jump" five pixels at a time.

 GRAPH key.

 TRACE key. Left arrow key.... (repeat)
 2nd key. Right arrow key.... (repeat)

 Calculator screen image. Calculator screen image.

Notice at the top of the screen the equation of the function is displayed as well.
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