%
% Written by:
% --
% John L. Weatherwax                2009-04-21
%
% email: wax@alum.mit.edu
%
% Please send comments and especially bug reports to the
% above email address.
%
% Problem on EPage 62; Solutions on EPage 161
%
%-----

close all; clc; clear all; 

addpath('../../BookCode');

% Test the code on several problems from this section: 
%
disp('Ex 3.2:');
fn = @(x) ( x^1.4 - sqrt(x) + 1/x - 100 );
root_im = illinois_method( fn, 20.0, 30.0, 1.e-9 )

disp('Ex 3.3 one root:');
fn = @(x) ( abs(x).^3 + x - 6 );
root_im = illinois_method( fn, -3, -1, 1.e-9 )
disp('Ex 3.3 second root:');
root_im = illinois_method( fn, +1, +2, 1.e-9 )

disp('Ex 3.4:');
c = 10;
fn = @(x) ( tan(x) - c );
root_im = illinois_method( fn, 1.4, 1.5, 1.e-9 )