3. Which of the following matrices can be factorized as A = LU, wh lower triangular matrix and I is an upper triangular matrix? (A)(B)(C)(D)

13. Which of the following statements is FALSE about the algebraic and geomet- ric multiplicities of the eigenvalues of A? (A) The algebraic multiplicity of the eigenvalue -1 is 1. (B) The algebraic multiplicity of the eigenvalue 2 is 2. (C) The geometric multiplicity of the eigenvalue -1 is 1. (D) The geometric multiplicity of the eigenvalue 2 is 2.