Casio fx-9750G PLUS - Manual (Page 156)

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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
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