Casio CFX-9850GC PLUS Manuel graphique - Page 3

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14-2 Graphing a Conic Section

1. Select the function whose graph you want to draw.

2. Press w and the variable input screen appears.

3. Assign values to each variable.

4. Press 6 (DRAW) to draw the graph.

P.136

Example 1

To graph the circle (X – 1)

Use the following View Window parameters.

Xmin

Xmax = 6.3

Xscale = 1

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• The values that appear are the values currently assigned to each variable,

which are general variables used by the calculator. If the values include an

imaginary part, only the real part appears on the display.

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• You can also use f and c to highlight a variable and then input a value.

• Certain View Window parameters can make a circle graph come out looking

like an ellipse. When this happens, you can use the graph correction function

(SQR) to make corrections and produce a perfect circle.

= –6.3

Ymin

Ymax = 3.1

Yscale = 1

Graph function

Function variables

+ (Y – 1)

= 2

= –3.1

195