function y=Poly(x)

%y= 16*x.^4-40*x.^3+5*x.^2+20*x+6;
 
%y = x.^3 - 4.*x.^2 + 5.*x -2;

%y=x.^3 - 4.*x.^2 + 5.*x -2;

%y=x^2-3*x-1;

 %y = x.^3 - 5.*x.^2 + 100.* x - 500.;

%y = x.^3 - 5.*x.^2 + x - 5.;

%y = x.^3 - 7.*x.^2 + 11.*x - 5;

%y=x.^5 + 11.*x.^4 - 21.*x.^3 - 10.*x.^2 -21.*x - 5;

% Problems 4)c,d Burden Sect 2.6

%y= x.^4+x.^3+3.*x.^2+2.*x+2;

 % y=x.^5+11.*x.^4-21.*x.^3-10.*x.^2-21.*x -5;
 
 %Problem 9
 
 y=600.*x.^4-550.*x.^3+200.*x.^2-20.*x-1;