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

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123
8-5 Drawing Graphs Manually
After you select the RUN icon in the Main Menu and enter the RUN Mode, you
can draw graphs manually. First press
! 4
(Sketch)
5
(GRPH) to recall the
Graph Command Menu, and then input the graph function.
• {
Y=
}
/
{
r=
}
/
{
Parm
}
/
{
X=c
}
/
{
G ∫ dx
} ... {rectangular coordinate}/{polar coordinate}/
{parametric}/{X = constant}/{integration} graph
• {
Y>
}
/
{
Y<
}
/
{
Y
t t t t t
}
/
{
Y
s s s s s
} ... {Y> f ( x )}/{Y< f ( x )}/{Y
>
f ( x )}/{Y
<
f ( x )} inequality graph
u u u u u
To graph using rectangular coordinates (Y =)
[Sketch]
-
[GRPH]
-
[Y=]
You can graph functions that can be expressed in the format
y
=
f
(
x
).
Example To graph
y
= 2
x
2
+ 3
x
– 4
Use the following View Window parameters.
Xmin = –5 Ymin = –10
Xmax = 5 Ymax = 10
Xscale = 2 Yscale = 5
1. In the set up screen, specify “
Y=
” for Func Type and then press
J
.
2. Input the rectangular coordinate (Y =) expression.
!4
(Sketch)
1
(Cls)
w
5
(GRPH)
1
(Y =)
c vx +d v -e
3. Press
w
to draw the graph.
• You can draw graphs of the following built-in scientific functions.
• sin
x
• cos
x
• tan
x
• sin
–1
x
• cos
–1
x
• tan –1
x
• sinh
x
• cosh
x
• tanh
x
• sinh –1
x
• cosh
–1
x
• tanh
–1
x
• •
x
2
• log
x
• ln
x
• 10 x •
e
x •
x
–1
•
3
View Window settings are made automatically for built-in graphs.