5-27
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
and draw a circle graph.
K
CONICS
(RECT)
A
(X=AY
2
+BY+C)
U
A
U
@
U
@
U
(DRAW)
))
(POL)
AAAA
(R=2Acos
Q
)
U
A
U
(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.
Summary of Contents for FX-7400GII
Page 337: ...E CON2 Application ...
