What are the eigenvalues of the diagonal matrix A=(3007)A = \begin{pmatrix} 3 & 0 \\ 0 & 7 \end{pmatrix}A=(3007)?
λ=10\lambda = 10λ=10 (with multiplicity 2)
λ1=3,λ2=−7\lambda_1 = 3, \lambda_2 = -7λ1=3,λ2=−7
λ1=3,λ2=7\lambda_1 = 3, \lambda_2 = 7λ1=3,λ2=7
λ1=−3,λ2=−7\lambda_1 = -3, \lambda_2 = -7λ1=−3,λ2=−7