Decide whether the following matrices are positive definite, negative definite
Chapter 6, Problem 6.2.14(choose chapter or problem)
Decide whether the following matrices are positive definite, negative definite, semidefinite, or indefinite: A = 1 2 3 2 5 4 3 4 9 , B = 1 2 0 0 2 6 2 0 0 2 5 2 0 0 2 3 , C = B, D = A 1 . Is there a real solution to x 2 5y 2 9z 2 4xy6xz8yz = 1?
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