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Question 2 The following is the characteristic equation of the symmetric matrix A Then (If the answer is a fraction, write as a/b), (If the answer is not unique, please enter NA). (a) The size of A is n x n, where n (b) The algebraic multiplicity of the smallest eigenvalue is (c) The geometric multiplicity of the largest eigenvalue is (d) The determinant det(A-¹)= (1+1)(1-2)²(x+3)² = 0.