Hp 49g Graphing Calculator Manuel d'utilisateur Page 104

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Note that you cannot choose trace mode while you have the cursor
coordinates displayed. You must choose trace mode before you choose to
display the cursor’s coordinates.
To redisplay the menu—thereby hiding the cursor coordinates—press ©.
(The © and Q keys enable you to display and hide the menu respectively.
You can also redisplay the menu by pressing a fimction key.)
Zooming
The ZOOM fimctions enable you to look at a particular region of the plot in
more detail (by zooming in) or look at more of the plot than is currently
displayed (by zooming out).
To zoom in
1. Press ZOOM. The zoom menu is displayed.
2. Press ziN to select ZOOM IN.
You can also zoom in on a rectangular area of the plot you specify. To
specify the area:
1. Press zoom. The zoom menu is displayed.
2. Use the arrow keys to position the cursor at a corner of the rectangular
area that you want to zoom in on.
3. Press BOXZ to select box zoom.
4. Press the appropriate arrow keys to create a box aroimd the area you
want to zoom in on.
5. Press zoom. The calculator zooms in on the boxed area.
To zoom out
1. Press zoom. The ZOOM menu is displayed.
2. Press zouT to select zoom out.
Zoom options
A number of zoom options are available fi'om the ZOOM menu. You display
i the ZOOM menu from the plotting screen by pressing zoom. The main
: options are set out below.
Page 4-36
Plotting graphs
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