Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Using Matlab, find the positive minimum point of the function f(x) = x^-2 * tan(x) by computing the zeros of f' (derivative of f) using Secant's method
Expert Solution
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Step 1: Algorithm:
- Start.
- Define the function
f(x)and its derivativef'(x)using anonymous functions in MATLAB. - Set the initial guesses
x0andx1, as well as tolerance for convergence and a maximum number of iterations. - Implement the Secant method to find the critical point of
f'(x):- Initialize a loop for a maximum number of iterations.
- Calculate a new approximation
x2using the Secant formula. - Check for convergence by comparing the absolute difference between
x2andx1with the tolerance. - Update values for the next iteration (shift
x0andx1). - Exit the loop if convergence is achieved.
- Evaluate
f(x)the critical pointx2to find the minimum point. - Display the critical point and the corresponding minimum value of
f(x). - End.
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