fcn.m

matlab code for new user to design any project

function y = fcn(x)
% FCN returns a value from a simple function expression
% See file deriv.m for derivatives of these functions

% BE SURE TO COMMENT OUT ALL DEFINITIONS NOT REQUIRED

% function f1
y = 9.8 * 68.1 * (1-exp(-10*x/68.1))/x - 40;

% polynomial f2
%y = x^4 - 5*x^3 - 124*x^2 + 380*x + 1200;

% polynomial g2 - version 1 of f2 for 1-point iteration
%y = -1200/(x^3 - 5*x^2 - 124*x + 380);

% polynomial g2 - version 2 of f2 for 1-point iteration
%y = (5*x^3 + 124*x^2 - 380*x - 1200)/x^3;

% polynomial g2 - version 3 of f2 for 1-point iteration
%y = (-x^4 + 5*x^3 - 380*x - 1200)/(-124*x);

% polynomial f3
%y = x^2 - 5*x + 6;

% function f4
%y = x^2 - 2*x*exp(-x) + exp(-2*x) - 3;

% function f5
%y = -1200/(x^3 - 5*x^2 - 124*x + 380);

% function f6
%y = x^3 + 2*x^2 + 4*x - 6;