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please solve


Greetings:

Could someone please solve this symbolically?
This is just the ols formula for beta-hat but I need a symbolic
solution for this special case.

b = inv(x'x)x'y

where

x =  1  t  t^2
1  t  t^2
1  t  t^2


and simplify simplify simplify!!

Thanks,

Bob


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