Compute the optimal rank-2 approximation of the symmetric matrix 5.00 0.50 -1.50 0.00 0.50 5.00 0.00 -1.50 -1.50 0.00 5.00 0.50 0.00 -1.50 0.50 5.00 A eigenvectors of A. A₂ = given that the columns of ? - 1 1 -1 -1 1 are

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