You are working for a newly established computer assembly company, and you are tasked with determining the minimum number of computers the store must sell to make a profit. Considering the total costs and total sales, the equation that gives the minimum number of computers to be sold, denoted as $\text{'}$x$,\text{'}$ is as follows:

$()=40/1\mathrm{.}5875+35000=0$

Write a MATLAB code using the Newton$-$Raphson method to find the roots of the equation. With this code:

a$)$ Determine the minimum number of computers that must be sold to make a profit. Perform three iterations to estimate the root of the given equation.

b$)$ Calculate the absolute relative approximate error at the end of each iteration.

Note: The code should be written with comments explaining each step. The initial guess is x$0=50$x$\_0=50.$ The output should display the result and the error of each iteration on the screen.