Casio CFX-9850G PLUS, User'S Manual & Technical Reference

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u u
u u
u
To graph parametric functions
[Sketch] - [GRPH] - [Parm]
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 3.5T
y
= 7 sin T – 2 sin 3.5T
Use the following View Window parameters.
Xmin = –20 Ymin = –12 T,
θ
min = 0
Xmax = 20 Ymax = 12 T,
θ
max = 4
π
Xscale = 5 Yscale = 5 T,
θ
pitch = π ÷ 36
1. In the set up screen, specify “
Parm
” for Func Type.
2. Specify “
Rad
” (radians) as the angle unit and then press
J
.
3. Input the parametric functions.
!4
(Sketch)
1
(Cls)
w
5
(GRPH)
3
(Parm)
h cv -c c d.f v ,
h sv -c s d.f v )
4. Press
w
to draw the graph.
u u
u u
u
To graph X = constant
[Sketch] - [GRPH] - [X=c]
You can graph functions that can be expressed in the format X = constant.
Example To graph X = 3
Use the following View Window parameters.
Xmin = –5 Ymin = –5
Xmax = 5 Ymax = 5
Xscale = 1 Yscale = 1
1. In the set up screen, specify “
X=c
” for Func Type and then press
J
.
Drawing Graphs Manually
8 - 5