Casio FX-7400GII, Руководство пользователя

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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
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.