Let A = [3 1; 1 2]. What is the maximum value of xᵀAx, where the maximum is…

GATE · 2007 · IT

Let A = [3  1; 1  2]. What is the maximum value of xᵀAx, where the maximum is taken over all x that are unit eigenvectors of A?

  1. A.

    5

  2. B.

    (5 + √5)/2

  3. C.

    3

  4. D.

    (5 - √5)/2

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