Hello everyone,
I have 3 variables Y, X1 and X2. Each variables lies between 0 and 1. I want
to do a constrained regression such that a>0 and (1-a) >0

for the model:

Y = a*X1 + (1-a)*X2

I tried the help on the constrained regression in R but I concede that it
was not helpful.

Any help is greatly appreciated
-- 
Thanks,
Jim.

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