1.

If λ is eigenvalues of A, and A is idempotent matrix, then

A. λ ≠ 0
B. λ ≠ 1
C. Either λ = 0 or λ = 1
D. λ ≠ 0 and λ = 1
Answer» D. λ ≠ 0 and λ = 1


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