Hp 49g Graphing Calculator Manuel d'utilisateur télécharger pdf (Page 103)

Cursor movement

With the plot screen displayed, you can move the cursor in one of two

ways:

® standard graphics mode

® trace mode.

Standard cursor movement

In standard graphics mode, the cursor moves independently of the plot.

That is, pressing ®, ®, ®, causes the cursor to move parallel to an

axis in the direction indicated by the key.

Tracing a plot

In trace mode, the cursor jumps from plotted point to plotted point along

the fimction when you press the @ or ® key. (The points that are plotted

depend on the step value set on the Plot Window input fonn.)

Where multiple functions have been plotted, pressing ® or ® moves the

cursor from function to fmiction.

Trace mode is available for function, polar, and parametric plots. To

activate trace mode, press TRACE.

You would typically choose trace mode to determine the coordinates of

the points plotted (as explained in the next section). You can also display

plotted coordinates in tabular fonn. You do this by pressing 0 (iBLE) when

the plot is not displayed. See “Tables” on page 4-40 for more information.

Deactivate trace mode by pressing trace again. (Trace mode is

automatically deactivated if you choose a zoom fimction, or any other

fimction that causes the plot to be redrawn.)

Cursor coordinates

To display the coordinates of the cursor, press (F2) to select (X, y). The

menu is replaced by the coordinates of the cursor.

As you move the cursor, the coordinates of the cursor’s current position is

displayed. If you had turned on trace mode before pressing (£2), the

coordinates of consecutive plotted points are displayed as you press the

@ or ® key. (Plotted points are points that correspond to the values of

the independent variable as determined by the step value.)

Plotting graphs

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Hp 49g Graphing Calculator Manuel d'utilisateur Page 103