function myPlot2(f,a,b,n,m);

[X,Y]=myAuswertung(f,a,b,n);
h=(b-a)/m;
x=zeros(m+1,1);
z0=zeros(m+1,1);
z1=zeros(m+1,1);
z2=zeros(m+1,1);
for i=1:m+1
    x(i)=a+(i-1)*h;
    z0(i)=abs(f(x(i))-myNeville(X,Y,x(i)));
    z1(i)=abs(f(x(i))-interp1(X,Y,x(i)));
    z2(i)=abs(f(x(i))-spline(X,Y,x(i)));
end
semilogy(x,z0,x,z1,x,z2);
title ('Plot of ||f_2-p_{2,20}||_{h,\infty}');
h1 = legend('myNeville','interp1','spline',3);
set(h1,'Interpreter','none');