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Calculate the fixed point of cosine in Python
import math
tolerance = 0.00000000000000000001
def tolerance_equals(a, b):
return ((a - b) * (a - b)) < tolerance
def recursive_cosine_fixedpoint(a):
if tolerance_equals(a, math.cos(a)):
return a
return recursive_cosine_fixedpoint(math.cos(a))
print("The fixed point of cosine is {}".format(recursive_cosine_fixedpoint(1)))
# The fixed point of cosine is 0.7390851331706995
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