Casio CFX-9850GB PLUS Graph Manual - Page 9

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Casio CFX-9850GB PLUS Graph Manual
Example 2
Draw a graph of
on the horizontal axis, and with the points unconnected.
Use the same View Window parameters as those provided in
Example 1.
6(TABL)6(G·PLT)
(Selects plot type.)
6(Σ
a
)
n
(Draws graph with Σ
axis.)
• To input a different recursion formula after a graph is drawn, press ! Q.
This displays the Recursion Menu where you can input a new formula.
k k k k k Drawing a Convergence/Divergence Graph (WEB graph)
With this feature, you can draw a graph of
terms of linear recursion between two terms, substituted respectively for
y
f
x
the function
=
(
). The resulting graph can then be viewed to determine whether
or not the graph is convergent or divergent.
Example 1
To determine whether or not the recursion formula
a
+ 3
is convergent or divergent.
n
Use the following table range.
Start = 0
a
= 0.01
0
b
= 0.11
0
Use the following View Window parameters.
Xmax = 1
Xscale = 1
This example assumes that the following two recursion formulas are already
stored in memory.
1. Press 6(TABL) 4(WEB) to draw the graph.
Editing Tables and Drawing Graphs
+ 1 with Σ
a
a
= 2
n
n
+1
a
on the vertical
n
a
End
= 6
a
Str = 0.01
n
b
Str = 0.11
= 0
Ymax = 1
Yscale = 1
a
on the vertical axis and
n
f
a
a
=
(
) where
and
n
+1
n
n
+1
= 0
16 - 3
n
a
are the
n
y
x
and
in
a
a
2
= -3
n
n
+1
225