For this question, you will be required to use the binary search to find the root of some function f(x)f(x) on the domain x∈[a,b]x∈[a,b] by continuously bisecting the domain. In our case, the root of the function can be defined as the x-values where the function will return 0, i.e. f(x)=0f(x)=0 For example, for the function: f(x)=sin2(x)x2−2f(x)=sin2(x)x2−2 on the domain [0,2][0,2], the root can be found at x≈1.43x≈1.43

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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 For this question, you will be required to use the binary search to find the root of some function f(x)f(x) on the domain x∈[a,b]x∈[a,b] by continuously bisecting the domain. In our case, the root of the function can be defined as the x-values where the function will return 0, i.e. f(x)=0f(x)=0

For example, for the function: f(x)=sin2(x)x2−2f(x)=sin2(x)x2−2 on the domain [0,2][0,2], the root can be found at x≈1.43x≈1.43

Constraints

  • Stopping criteria: ∣∣f(root)∣∣<0.0001|f(root)|<0.0001 or you reach a maximum of 1000 iterations.
  • Round your answer to two decimal places.

Function specifications

Argument(s):

  • f (function) →→ mathematical expression in the form of a lambda function.
  • domain (tuple) →→ the domain of the function given a set of two integers.
  • MAX (int) →→ the maximum number of iterations that will be performed by the function.

Return:

  • root (float) →→ return the root (rounded to two decimals) of the given function.

 

 START FUNCTION

def binary_search(f,domain, MAX = 1000):

 

f = lambda x:(np.sin(x)**2)*(x**2)-2

domain = (0,2)

x=binary_search(f,domain)

x

 

test

binary_search(lambda x:(np.sin(x)**2)*(x**2)-2,(0,2))==1.43

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