Casio NP20 User Manual page 11

GRAPH FUNCTIONS
The graphing capabilities of this calculator makes it possible to draw complex graphs
using either rectangular coordinates (horizontal axis: x ; vertical axis: y) or polar
coordinates (angle: θ ; distance from origin: r).
All of the following graphing examples are performed starting from the calculator setup
in effect immediately following a reset operation.
Example 1: To graph Y = X(X + 1)(X – 2)
m
1. Press .
defc
2. Use
GRPH TBL, and then press
•
3. Input the formula.
v (v+b)
(v -c)w
5
4. Press (DRAW) or
Example 2: To determine the roots of Y = X(X + 1)(X – 2)
4
1. Press (G-SLV) to display the pull-up menu.
6
Quick-Start
to highlight
w
.
w
to draw the graph.
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