HP Prime Graphing NW280AAABA manual To find an, Intersection of two, Functions

Note the button. If you tap this button, vertical and horizontal dotted lines are drawn through the current position of the tracer to highlight its

position. Use this feature to draw attention to the cursor location. You can also choose a blinking cursor in Plot Setup. Note that the functions in the Fcn menu all use the current function being traced as the function of interest and the current tracer x- coordinate as an initial value. Finally, note that you can tap anywhere in Plot view and the tracer will move to the point on the current function that has the same x-value as the location you tapped. This is a faster way of choosing a point of interest than using the trace cursor. (You can move this tracing cursor using the cursor keys if you need finer precision.)

To find an	Just as there are two roots of the quadratic equation, there
intersection of two	are two points at which both functions intersect. As with
functions	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
		Q1, 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.

Function app 119