Question: [20 points] Let xhxl : (3:1, 3:2, . . . ,zcn) and consider the quadratic form n 6200 = 2(331' 33? 1221 (a) Find the

[20 points] Let xhxl : (3:1, 3:2, . . . ,zcn)

[20 points] Let xhxl : (3:1, 3:2, . . . ,zcn) and consider the quadratic form n 6200 = 2(331' 33? 1221 (a) Find the matrix A required to express Q(x) as x'Ax. (b) Then assume that an1 has mean vector p, : p1\" and the covariance matrix 2 : 02In. Compute E[X'AX]. Here 1\" denotes the allones vector of size n X 1 and In the identity matrix of size n X n

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