Casio FX-9750G PLUS User's Manual & Technical Reference page 253

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.)
a
)
6(Σ
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.
Xmin
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
a a + 1 with Σ
= 2
n n
+1
a
on the vertical
n
a
End = 6
a
Str = 0.01
n
b
Str = 0.11
n
= 0 Ymin
Ymax = 1
Yscale = 1
a
on the vertical axis and
n
f a a
= ( ) where and
n n n
+1 +1
= 0
16 - 3
n
a
are the
n
y x
and in
a a
= –3
2
n n
+1
225