Python code: # there is only one root def fn(x): return x**3 - x - 2 # define bisection method def bisection( eq, segment, app = 0.3): a, b segment['a'l, segment['b'] Fa, Fb eq(a), eq(b) if Fa * Fb > 0: raise Exception( 'No change of sign bisection not possible')

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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My question is can I write this code in a different and easier way .?

Python code:
# there is only one root
def fn(x):
return x**3 - x - 2
# define bisection method
def bisection ( eq, segment, app = 0.3):
a, b = segment ['a'1, segment ['b']
Fa, Fb = eq(a), eq(b)
if Fa * Fb > 0:
raise Exception( 'No change of sign bisection not possible')
while( b- a > app ):
x = ( a + b) / 2.0
f = eq(x)
if f * Fa > 0: a = x
else: b = x
return x
#test it
print bisection ( fn, {'a':1, 'b':2}, 0.00003)
Transcribed Image Text:Python code: # there is only one root def fn(x): return x**3 - x - 2 # define bisection method def bisection ( eq, segment, app = 0.3): a, b = segment ['a'1, segment ['b'] Fa, Fb = eq(a), eq(b) if Fa * Fb > 0: raise Exception( 'No change of sign bisection not possible') while( b- a > app ): x = ( a + b) / 2.0 f = eq(x) if f * Fa > 0: a = x else: b = x return x #test it print bisection ( fn, {'a':1, 'b':2}, 0.00003)
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