Casio SERIES FX-9860G - Manual (Page 249)

20070201
Example To draw the WEB graph for the recursion formula a
n +1
= –3( a
n
) 2 + 3 a
n
,
b
n +1
= 3 b
n
+ 0.2, and check for divergence or convergence. Use the
following table range and V-Window settings.
Table Range
Start = 0, End = 6, a
0
= 0.01, a
n
Str = 0.01, b
0
= 0.11, b
n
Str = 0.11
V-Window Settings
Xmin = 0, Xmax = 1, Xscale = 1
Ymin = 0, Ymax = 1, Yscale = 1
Procedure
1 m RECUR
2 !3(V-WIN) awbwbwc
awbwbwJ
3 3(TYPE)2( a
n +1
) -d2( a
n
) x+d2( a
n
) w
d3( b
n
)+a.c w
4 5(SET)1( a
0
)
awgwa.abwa.bbwc
a.abwa.bbwJ
5 6(TABL)
6 4(WEB)
7 w~w(
a
n
is convergence)
cw~w( b
n
is divergence)
Result Screen
5-9-8
Graphing a Recursion Formula