66
Chapter 4
Graphing
[
• Other menu items are identical to those in the STAT, GRAPH, TABLE Mode menu.
The Sketch function lets you draw lines and plot points on a graph that is already on
the screen.
All the examples in this section that show operations in the STAT, GRAPH or TABLE
Mode are based on the assumption that the following function has already been
graphed in the
GRAPH Mode
.
Memory Area Y1:
y
=
x
(
x
+ 2)(
x
– 2)
The following are the View Window parameters used when drawing the graph.
Xmin
= –5
Ymin
= –5
Xmax = 5
Ymax = 5
Xscl
= 1
Yscl
= 1
u
u
u
u
u
To plot points
In the STAT, GRAPH or TABLE Mode
Example
To plot a point on the graph of
y
=
x
(
x
+ 2)(
x
– 2)
1. After graphing the function, display the sketch menu and perform the following
operation to cause the pointer to appear on the graph screen.
!4
(SKTCH)
3
(PLOT)
1
(Plot)
2. Use the cursor keys (
f
,
c
,
d
,
e
) to move the pointer the locations of the
points you want to plot and press
w
to plot.
• You can plot as many points as you want.
e
~
ef
~
f
w
• The current
x
- and
y
-coordinate values are assigned respectively to variables X
and Y.
1
2
3
4
Summary of Contents for fx-7400G PLUS
Page 7: ... fx 7400G PLUS ...
Page 14: ...xii Contents ...
Page 57: ...Differential Calculations Chapter 3 ...
Page 176: ...162 Chapter 8 Programming ...
Page 188: ...Chapter 9 Data Communications 174 ...
Page 199: ...185 1 2 3 4 5 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 200: ...186 Program for Circle and Tangents No 4 Step Key Operation Display 6 7 8 9 10 ...
Page 201: ...187 11 12 13 14 15 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 202: ...188 16 17 18 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 205: ...191 1 2 3 4 5 Program for Rotating a Figure No 5 Step Key Operation Display ...