for i = 1:num
    y1norm(i) = 1./i * sum(ynorm(1:i));
    y1exp(i) = 1./i * sum(yexp(1:i));
    y1cau(i) = 1./i * sum(ycau(1:i));
end

figure;
hold on;
plot(x, y1norm, x, y1exp, x, y1cau);