Casio CFX-9970G, User Manual

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8-6 Other Graphing Functions
The functions described in this section tell you how to read the
x
- and
y
-coordi-
nates at a given point, and how to zoom in and zoom out on a graph.
• These functions can be used with rectangular coordinate, polar coordinate,
parametric, X = constant, and inequality graphs only.
k k k k k
Connect Type and Plot Type Graphs (Draw Type)
You can use the Draw Type setting of the set up screen to specify one of two
graph types.
• Connect
Points are plotted and connected by lines to create a curve.
• Plot
Points are plotted without being connected.
k k
k k
k Trace
With trace, you can move a flashing pointer along a graph with the 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 • Polar Coordinate Graph
• Parametric Function Graph • X = Constant 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:
Y1 =
x
2 – 3 Y2 = –
x
+ 2
Use the following View Window parameters.
Xmin = –5 Ymin = –10
Xmax = 5 Ymax = 10
Xscale = 1 Yscale = 2
P.5