Casio fx-9860G SD - Manual (Page 245)

20050401
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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
a wbwbwJ
3 3(TYPE)2( a
n + 1
)-d2( a
n )x+d2( a
n )w
d 3( b
n )+a.cw
4 5(SET)1( a
0
)
a wgwa.abwa.bbwc
a.ab wa.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