Casio fx-7400G PLUS, Руководство пользователя, Страница: 71 / 218

57
Graphing Chapter 4
u u
u u
u
To graph parametric functions
You can graph parametric functions that can be expressed in the following format.
(X, Y) = (
f
(T),
g
(T))
Example To graph the following parametric functions:
x
= 7 cos T – 2 cos 3T
y
= 7 sin T – 2 sin 3T
Use the following View Window parameters.
Xmin = –20 Ymin = –12
Xmax = 20 Ymax = 12
Xscl = 5 Yscl = 5
Tmin = 0 Tmax = 2
π
Tptch =
π ÷
36
1. In the set-up screen, specify the appropriate graph type for F-Type.
!Z2
(Parm)
2. Set the default angle unit to radians (Rad).
cc 2
(Rad)
Q
3. Input the parametric functions.
A!4
(SKTCH)
1
(Cls)
w
2
(GRPH)
2
(Parm)
h c T -c c d T ,
h s T -c s d T )
4. Press
w
to draw the graph.
w
u u
u u u
To graph inequalities
You can graph inequalities that can be expressed in the following four formats.
•
y
>
f
(
x
)
•
y
<
f
(
x
)
•
y
>
f
(
x
)
•
y
<
f
(
x
)