Matlab code assistance needed please!

Hi, I'm currently attempting to write code for a problem in a programming unit.

We are asked to develop a code in MatLab to find a root of the equation: f(x) = cos(x) - x.

This MUST be done using the "Decimal search/Sign Change" method.

A picture has been provided below with a template given to us for writing the code (we need to roughly follow this method).

Any help or tips would be appreciated, thank you!

Thanks!

function [a, b] decimal search (a0, bo, f, n) % SIGN CHANGE finds roots of equation f (x) between ao and bo. % f(a0) and f (bo) must be different signs. Inputs: a0 lower bound on root value bo: upper bound on root value f: function to find roots of (solve f (x) = 0) n: degree of accuracy. (ba10 (-n) *(bo0a) Returns: a: lower bound on root value b: upper bound on root value disp ('Warning: dummy decimal search implementation used.') for i - l:n % Update a, b end end