bisect function in matlab

In MATLAB, you can use the fminbnd function to perform a bisection search for the minimum (or maximum) of a scalar function.

Here's an example of how to use the fminbnd function:

main.m
% Define the function you want to bisect
f = @(x) x^2 - 4;

% Call the fminbnd function to perform the bisection search
[x_min, f_min] = fminbnd(f, -10, 10);

% Output the results
disp(['Minimum value: ' num2str(f_min)]);
disp(['Location of minimum: ' num2str(x_min)]);
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In the example above, the function f is defined as x^2 - 4. The fminbnd function is then called with the function f as the first argument, and the lower and upper bounds of the search range (-10 and 10) as the second and third arguments respectively.

The fminbnd function returns the minimum value of the function f (f_min) and the corresponding value of x (x_min) at which the minimum occurs.

Note: The fminbnd function assumes that the function being minimized is a scalar function of a single variable. If you have a multivariable function, you will need to use a different optimization function, such as fminsearch or fminunc, and provide an appropriate initial guess as an additional argument.