For each of the following matrices, write down the quadratic form and decide, with proof, whether the matrix is positive

Question

For each of the following matrices, write down the quadratic form and decide, with proof,
whether the matrix is positive definite:
(a) A= 7   5
           5   5
(b)  B=  4   2    -1
             2   0      2
            -1    2    3

Kunduz · Accepted Answer

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