a. What is func in this function? Provide description and how func would be entered.

b. What is es? Provide definition. How can you calculate an es if you want n number of significant digits in your final answer? c. Why is iter=iter+1 being used? d. What is ea? e. When does the while loop stop?

function [root,fx,ea,iter]-bisect (func,xl,xu,es,maxit,varargin) % bisect: root location zeroes [root, fx, ea, iter] =bisect (func , xl , xu, es, maxit, p1,p2, . . . ) : uses bisection method to find the root of func % input: func = name of function xl, xu lower and upper guesses % es desired relative error (default = 0.0001%) maxit maximum allowable iterations (default = 50) % pl,p2, . . .additional parameters used by func output: rot real root fxfunction value at root ea = approximate relative error (%) % iter= number of iterations if nargin0,error ('no sign change', end if nargin