load polinom.mat

predikaltTartomany = linspace(-4,8, 100);
hatodfoku = polyfit(meresiPozicio, mertErtekek, 6);
predikaltErtekek = polyval(hatodfoku, predikaltTartomany);

integralOsszeadassal = sum(predikaltErtekek*(predikaltTartomany(2)-predikaltTartomany(1)));
 disp( integralOsszeadassal )
 
 integralTrapez = trapz(predikaltTartomany, predikaltErtekek);
 disp (integralTrapez)
 
 integralFuggvennyel = integral(hatodfoku, -4, 8);
 disp (integralFuggvennyel)