X=[0 0.3 0.55 0.60 0.98 1.07 1.27 1.33 1.6 2];
 F=[0.2500    0.5455    0.7727    0.8146    1.0805    1.1272    1.2051    1.2211    1.2496    1.1593];

%Drugi primer
%X=[1:10];
%F=log(X)+3;
%Test: nula(1,1e-4,20)