aa1_example2

function [energy] = diavasma4_version2(start,step,stop)

x = start:step:stop ;
y1 = x - cos(x) ;
y2 = x - sin(x) ;
y3 = x ;

plot(x,y1,'go')
hold on
plot(x,y2,'r+')
hold on
plot(x,y3,'b*')
title('askhsh me grafhmata')

sum1 = 0; sum2 = 0; sum3 = 0;
for i = 1:length(x)
    sum1 = sum1 +  y1(i)^2;
    sum2 = sum2 +  y2(i)^2;
    sum3 = sum3 +  y3(i)^2;
end
energy = [sum1 , sum2 , sum3];
end