Dear all, 
I need an advice in the following problem. 
I have to maximize two functions of the form f1(x)=f(y1,x,alpha1,beta1) and f2(x)=(y2,x,alpha2,beta2), the maximization is with respect to alpha1, alpha2, beta1, beta2.  I can maximize each function separately using nlm. 
The problem is that I have to add the constraint of the form g(alpha1)=g(alpha2). 
The total number of parameters is approximately 30.  
What is the best way to do it? 
I am using R-1.9.1 on Windows XP. 
Much thanks in advance for any suggestions, 
Best regards, 
Vicky Landsman.   
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