Hp 49g Graphing Calculator Manuel d'utilisateur télécharger pdf (Page 107)

Finding slopes

The slope tool displays the slope of the function at the x value of the

cursor and moves the cursor to the point on tire function where the slope

was calculated. To find the slope, press SLOPE on the FUNCTIONS menu.

If the point is not within the display area, the cursor remains where it is,

the message OFF SCREEN is briefly displayed, and the slope of the point is

displayed near the bottom left comer of the screen.

Finding areas

The area tool displays the area between a curve and the .*■ axis between

two X values that you select.

1. Move the cursor so that it is over the graph at one end of the area that

you want to calculate.

2. Press®.

3. Move the cursor until it is over the graph at the other end of the area

that you want to calculate.

4. Press AREA on the FUNCTIONS menu.

The area is displayed near the bottom left comer of the screen.

Finding intersections

The intersection tool displays the coordinates of the intersection between

two functions, or between a function and the x axis.

The intersection tool determines the intersection of the currently selected

function and the ftmction that follows it on the Plot Functions screen. If

you have more than two fimctions plotted, you may need to select another

ftmction, or change the order of the functions listed on the Plot Fmrction

screen. (You can change the order of the functions listed by pressing

MOtTsi- or moveT, on the second page of the function key menu on tire Plot

Fmrction screen.)

If two fimctions intersect at more than one point, the result is the

coordinates of the intersection closest to the cursor. If only one ftmction

is plotted, the result is the coordinates of the intersection of the ftmction

and the ,r-axis.

To find the intersection, press INTER from the functions menu.

Plotting graphs

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Hp 49g Graphing Calculator Manuel d'utilisateur Page 107