> Dear all
>
> thank you for the previous answers.
>
> What I was looking was how to sigma or sum from an
> equation, and find the b1 and b2 cooficient such as
> :
>
>
> Wj= b1* SUM (Yi*exp^(b2*Dij)) where i =
1,2,3,...R
>
> Wj = wage in region j
> Yi is Income in region i
> Dij is distance between region i and j
>
> Thank you
>
>
> Regards
> Adiwa
>
>
>
>
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