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For the random variables, Y and X, find α, β and γ that minimise E[(Y−α−βX−γX^2)^2|X]. Show...

For the random variables, Y and X, find α, β and γ that minimise E[(Y−α−βX−γX^2)^2|X].

Show all derivations in your answer. You may interchangeably use differentiation and expectation.

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