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2x
k
1
3x
k
x
kC1
D
:
(4.230)
p
p
p
Set x
0
D
1=
5. Show that x
1
D
1=
5 and that x
2
D
x
0
D
1=
5. Conclude
that
p
x
k
D
.
1/
k
5
and thus we do not have convergence. Graph f
D
f.x/ and try to understand
what you have just observed using graphical analysis.
