4. A real, symmetric 3-by-3 matrix M has eigenvalues A₁ = 4, A₂ = 6 and A3 = -3. An eigen- vector corresponding to the eigenvalue A₁ = 4 is v₁ = and an eigenvector corresponding [ to the eigenvalue X₂ = 6 is v₂ = What is M? 0

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