k1 = 1/50;
k2 = 1/50;
k3 = 1/5;
k4 = 1/2;
k5 = 4/5;
k6 = 1/100;
k7 = 4/5;
k8 = 1/125;
k9 = 16/3;
k10 = 100/7;
k11 = 1;