Help with Matlab code, must use conditions above and while and if statements

Write a MATLAB function, called bisection_method that inputs a function f , two numbers a,b, an error tolerance, tol, and a maximum number of iterations, N, and finds a root c of f in the interval [a,b] using the bisection method. Your function should compute a bound on the error, and stop when the error is less than the tolerance, or if the number of iterations exceeds N - whichever happens first. The function should start with the line: function [c,n,err] bisection_method(f, a, b, tol,N) The function should contain a while' loop, looking something like: while err > tol && n