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Let (A,B) have joint PDF f(a,b)=(ca^2b^2 when 0 < a,b,a+b < 1 and 0 otherwise for...

Let (A,B) have joint PDF f(a,b)=(ca^2b^2 when 0 < a,b,a+b < 1 and 0 otherwise for some constant c > 0. 1. Find a formula for E[A | B = b]. 2. Find Cov(A,B).

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