10. Graphing a Conic Section

Important!

• The fx-7400Gɉis not equipped with the CONICS mode.

IGraphing 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 = 2y2 + y − 1 and graph a

 

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

 

r = 4cosΘΘand draw a circle graph.

KCONICS

(RECT)A(X=AY2+BY+C)U

AU@U @U(DRAW)

))

(POL)AAAA(R=2AcosΘ)U

AU(DRAW)

11. Changing the Appearance of a Graph

IDrawing 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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