clear all;
range=zeros(1,20);
ranges=zeros(1,126);
d=zeros(1,20);
d(1)=0.05;
range(1)=0.05;
for k=2:1:20
    d(k)=k/20;
    range(k)=range(k-1)+d(k);     
end
i=[1 1 1 1 1 1 1 1 1 1 1];
j=[10.5 20 35 50 65 80 90 100 115 125 136];
plot(d,range,'m-^');
hold on;
plot(i,j,'m-^');
xlim([0,1.1]);