Casio fx-7400G, Руководство пользователя

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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
"
Tptch =
" ÷
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
)