HP 40G Trace a graph, Zoom within a graph, To jump directly to a value To turn trace on/ off

Trace a graph

To move between relations

To jump directly to a value

To turn trace on/ off

Zoom within a graph

ZOOM options

You can trace along a function using the *>, or￿*A, key which moves the cursor along the graph. The display also shows the current coordinate position (x, y) of the cursor. Trace mode and the coordinate display are automatically set when a plot is drawn.

Note: Tracing might not appear to exactly follow your plot if the resolution (in Plot Setup view) is set to Faster. This is because RES: FASTER plots in only every other column, whereas tracing always uses every column.

In Function and Sequence Aplets: You can also scroll (move the cursor) left or right beyond the edge of the display window in trace mode, giving you a view of more of the plot.

If there is more than one relation displayed, press *k, or *e, to move between relations.

To jump straight to a value rather than using the Trace function, use the *272_menu key. Press *272_, then enter a value. Press 2._to jump to the value.

If the menu labels are not displayed, press 0(18_first.

• Turn off trace mode by pressing ￿_.

•Turn on trace mode by pressing 75$&(_.

•To turn the coordinate display off, press 0(18_.

One of the menu key options is =220_. Zooming redraws the plot on a larger or smaller scale. It is a shortcut for changing the Plot Setup.

With the Set Factors option you can specify the factors that determine the extent of zooming, and whether the zoom is centered about the cursor.

Press =220_, select an option, and press 2._. (If =220_is not displayed, press 0(18_.) Not all =220_options are available in all aplets.

Option	Meaning
Center	Re-centers the plot around the current
	position of the cursor without
	changing the scale.
Box...	Lets you draw a box to zoom in on. See
	“Other views for scaling and splitting
	the graph” on page 2-13.

2-8 Aplets and their views