let A be a 3x3 matrix whose eigenvalues are lambda1 = 1; lambda 2 = -1; lambda3 = 1/2, and corresponding eigenvectors as follows: u1 = u2 = and u3 = .

Part A.

What is nullspace of the matrix A-I?

(I is the identity matrix, I = [1 0 0; 0 1 0; 0 0 1])

Part B.

What is the nullspace of matrix A?

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