From: mgashaw@gmail.com   
      
   Dear all,   
      
   I want to make an optimization with a multivariable nonlinear merit function   
   defined in such a way that it is well-behaved(continuous function) within a   
   given interval but generally it is a piecewise function over the large domain.   
   Derivative-based    
   optimization algorithm is valid only in a subset of the whole domain.What kind   
   of algorithm do you suggest me to use which can accommodate the whole   
   interval? Or how do you tackle such problems?   
      
   Thanks,   
      
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