Graphing a conic section, Changing the appearance of a graph – Casio FX-9750GII User Manual

Page 133

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10. Graphing a Conic Section

Important!

• The fx-7400G

ɉ

is not equipped with the CONICS mode.

I Graphing a Conic Section

You can use the CONICS mode to graph parabolas, circles, ellipses, and hyperbolas. You can
input a rectangular coordinate function, polar coordinate function, or parametric function for
graphing.

1. From the Main Menu, enter the CONICS mode.

2. Select the function type.

(RECT).... {rectangular coordinate}

(POL).... {polar coordinate}

(PARM).... {parametric}

3. Select the pattern of the function in accordance with the type of graph you want to draw.

1

U

4. Enter the coefficients of the function and draw the graph.

Example

To input the rectangular coordinate function

x

= 2

y

2

+

y

− 1 and graph a

parabola open on the right, and then input the polar coordinate function

r

= 4cos

Q

 KCONICS

 (RECT)A(X=AY

2

+BY+C)

U

 AU@U @U(DRAW)

 ))

 (POL)AAAA(R=2Acos

Q)U

 AU(DRAW)

11. Changing the Appearance of a Graph

I Drawing a Line

The sketch function lets you draw points and lines inside of graphs.
You can select one of four different line styles for drawing with the sketch function.

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