Casio fx-7400G PLUS Instruction Manual page 13

k k k k k Trace
With trace, you can move a flashing pointer along a graph with the f, c, d, and
e cursor keys and obtain readouts of coordinates at each point. The following
shows the different types of coordinate readouts produced by trace.
• Rectangular Coordinate Graph
• Inequality Graph
u u u u u To use trace to read coordinates
Example To determine the points of intersection for graphs produced by
the following functions:
y
Y1: =
y
Y2: = –
Use the following View Window parameters.
Xmin
Xmax = 5
Xscl
1. After drawing the graphs, press 1 (TRCE) to display the pointer in the center of
the graph.
1(TRCE)
• The pointer may not be visible on the graph when you press 1 (TRCE).
2. Use d to move the pointer to the first intersection.
~
d d
• Parametric Function Graph
x
2
– 3
x
+ 2
= –5 Ymin
Ymax = 10
= 1 Yscl
x y
/ coordinate values
Graphing Chapter 4
= –10
= 2
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