11 (2 Points) 11 What are the eigenvalues of the matrix o 20 -2 12 0 1 0 -2, V2, -12 0 -2, 0, 0 O 0,0,2 O 2, i, - i
12 (2 Points) -5 The matrix A= 0 0 -1 7 6 -12 is called? - 1 0 Lower triangular matrix o Upper triangular matrix Singular matrix Diagonal matrix
13 (2 Points) You are given that -1 is an eigenvalue of [-} 11. What is the algebraic multiplicity of this eigenvalue? 0-1 1 O 2