Question: Find a unit vector x? in R 3 at which Q( x ) is maximized, subject to x T x? = 1. [ Hint:? The

Find a unit vector x?in R³ at which Q(x) is maximized, subject to x^Tx?= 1. [Hint:?The eigenvalues of the matrix of the quadratic form Q are 2, ?1, and ?4]

Let Q(x) = -2x x + 4xx + 4x2x3.

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