Feigenbaum constant calculation: Difference between revisions
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13 4.66920537
</pre>
=={{header|Python}}==
{{trans|D}}
<lang python>max_it = 13
max_it_j = 10
a1 = 1.0
a2 = 0.0
d1 = 3.2
a = 0.0
print " i d"
for i in range(2, max_it + 1):
a = a1 + (a1 - a2) / d1
for j in range(1, max_it_j + 1):
x = 0.0
y = 0.0
for k in range(1, (1 << i) + 1):
y = 1.0 - 2.0 * y * x
x = a - x * x
a = a - x / y
d = (a1 - a2) / (a - a1)
print("{0:2d} {1:.8f}".format(i, d))
d1 = d
a2 = a1
a1 = a</lang>
{{out}}
<pre> i d
2 3.21851142
3 4.38567760
4 4.60094928
5 4.65513050
6 4.66611195
7 4.66854858
8 4.66906066
9 4.66917155
10 4.66919515
11 4.66920026
12 4.66920098
13 4.66920537</pre>
=={{header|Racket}}==
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