Question: 21. Let the n x 1 random vector x have a normal density given by Eq. (10.6.2) and let A be a symmetric n x

21. Let the n x 1 random vector x have a normal density given by Eq. (10.6.2) and let A be a symmetric n x n matrix of constants. Find the set of numbers (values of λ) such that the following expected value exists: ????[????^(λx’Ax)].

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