
Finding an intersection of two functions
Just as there are two roots of the quadratic equation, there are two points at which both functions intersect.
As with roots, you need to position your cursor closer to the point you are interested in. In this example, the
intersection close to x = –1 will be determined.
The Go To command is another way of moving the trace cursor to a particular point.
1.
Tap to re-display the menu, tap , enter 1, and tap .
The tracing cursor will now be on one of the functions at x = 1.
2.
Tap and select Intersection.
A list appears giving you a choice of functions and axes.
122 Chapter 7 Function app
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