FN Object: 1 MPI processes
  type: exp
    Exponential: exp(x)
  f(2.2)=9.02501
  f'(2.2)=9.02501
FN Object: 1 MPI processes
  type: exp
    Exponential: +1.3  *exp(-0.2*x)
  f(2.2)=0.837247
  f'(2.2)=-0.167449
Parameters:
 - alpha: -0.2 
 - beta: 1.3 
