HP Prime Graphing NW280AAABA manual Trace a graph Change the scale

Trace a graph

Change the scale

By default, the trace functionality is active. This enables you to move a cursor along a graph. If more than two graphs are shown, the graph that is the highest in the list of functions in Symbolic view is the graph that will be traced by default. Since the linear equation is higher than the quadratic function in Symbolic view, it is the graph on which the tracing cursor appears by default.

8.Trace the linear function.

>or <

Note how a cursor moves along the plot as you press the buttons. Note too that the

coordinates of the cursor appear at the bottom of the screen and change as you move the cursor.

9.Move the tracing cursor from the linear function to the quadratic function.

=or \

10.Trace the quadratic function.

>or <

Again notice how the coordinates of the cursor appear at the bottom of the

screen and change as you move the cursor.

Tracing is explained in more detail in “Trace” on page 94.

You can change the scale to see more or less of your graph. This can be done in four ways:

•Press +to zoom in or wto zoom out on the current cursor position. This method uses the zoom factors set in the Zoom menu. The default for both x and y is 2.

•Use the Plot Setup view to specify the exact x-range (XRNG) and y-range (YRNG) you want.

114 Function app