y=RAYO(x);

function y=RAYO(x);

global t1 t2

k=x(1);
a=-x(2);
b=-x(3);
t03=x(4);
t09=x(5);

F1=1- ( k * ((a/b) ^ (a / (b-a))) * (b - a) / b);
F2=exp(a*t2)-exp(b*t2) - (0.5 * ((a/b) ^ (a / (b - a)) ) * (b - a) / b);
F3= (t1/1.67) - (t09 - t03);
F4= (0.9) - ( k * ( exp(a*t09) - exp(b*t09) ) );
F5=(0.3) - ( k * ( exp(a*t03) - exp(b*t03) ) );

y= F1^2 + F2^2 + F3^2 + F4^2 + F5^2;