i wish to edit a program to solve such question
"min (n-1)/2*ln(x1^2)+1/(2*x1^2)*{[ln(y2/y1)-x2]^2+[ln(y3/y2)-x2]^2……+[ln(yn/yn-1)-x2]^2}
y1,y2......,yn-1,yn is known 
to solve the x1,x2 where 0<=x1<=1 ,0<=x2
it is a likelihood function L(yt,t=1,......n;x1,x2)
i wish to get a program of C++ with imsl 3.0
can you solve the question for me 
i have faced the computer for three days 
and read the imsl tool book detail,but still can't solve the question