Exercise 1.5.3 The density of Y = (y1,y2,y3) is (2)3/2|V|1/2eQ/2, where Q = 2y21 +y22 +y23 +2y1y28y14y2+8.

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Exercise 1.5.3 The density of Y = (y1,y2,y3) is

(2π)−3/2|V|−1/2e−Q/2, where Q = 2y21

+y22

+y23

+2y1y2−8y1−4y2+8.

Find V−1 and μ.

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Exercise 1.5.3 The density of Y = (y1,y2,y3) is (2)3/2|V|1/2eQ/2, where Q = 2y21 +y22 +y23 +2y1y28y14y2+8.

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