2. Let X and Y be continuous random variables with joint p.d.f. Find the f(x, y) = k(x + y), 0≤x≤y≤1 (a) value of the constant k (b) joint c.d.f of X and Y F(x, y) marginal c.d.f. of X and marginal c.d.f. of Y. marginal p.d.f. of X and marginal p.d.f. of Y.

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