9.11: Let X and Y be two continuous random variables, with the same joint probability density function as in Exercise 9.10. Find the probability P(X
*9.10: Let X and Y be two continuous random variables with joint probability density function f(x, y) = 12 5 xy(1 + y) for 0 ≤ x ≤ 1 and 0 ≤ y ≤ 1, and f(x, y) = 0 otherwise.