hp40g+.book Page 8 Friday, December 9, 2005 1:03 AM

Trace a graph

Key

Meaning (Continued)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turns menu-key labels on and off.

 

 

 

 

 

 

 

 

 

 

 

 

When the labels are off, pressing

 

 

 

 

 

 

 

 

 

turns them back on.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

•

Pressing

 

 

 

 

 

once displays the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

•

full row of

labels.

 

 

 

 

 

 

 

Pressing

 

 

 

 

 

a second time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

removes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the row of labels to

 

 

 

 

 

 

•

display only the graph.

 

 

 

 

 

 

 

Pressing

 

 

 

 

 

a third time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

displays

the

coordinate mode.

 

 

 

 

 

 

Displays the ZOOM menu list.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turns trace mode on/off. A white box

 

 

 

 

 

 

 

 

 

 

 

 

appears over the

 

 

 

on

 

.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Opens an input form for you to enter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

an X (or T or N or θ) value. Enter the

 

 

 

 

 

 

value and press

 

 

 

. The cursor jumps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to the point on the graph that you

 

 

 

 

 

 

entered.

 

 

 

 

 

 

 

 

 

 

 

 

 

Function aplet only: turns on menu list

 

 

 

 

 

 

 

 

 

 

 

 

for root-finding functions (see

 

 

 

 

 

 

 

“Analyse graph with FCN functions”

 

 

 

 

 

 

on page 3-4).

 

 

 

 

 

 

 

 

 

 

 

 

 

Displays the current, defining

 

 

 

 

 

 

 

 

 

 

 

 

 

 

expression. Press

 

 

 

 

 

to restore the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

menu.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You can trace along a function using the or 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.

To move between relations

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 or to move between relations.

2-8

 

 

Aplets and their views