Reconsider Exercise 9.6.1. Determine the perturbations of the eigenvalues 1 and the eigenfunctions 1 using the method of eigenfunction expansion: (a) d dx (0) = 0 and d dx (L)=0 (b) (0) = 0 and d dx (L)=0 (c) (0) = 0 and (L)=0

Section 1.2 Gauss-Jordan Elimination There are three legal elementary row operations: (1) Multiply a row by a nonzero constant. Example: 2R 1 would multiply every entry in the first row of a matrix by 2. (2) Switch two rows. R ↔ R Example: 1 2 would interchange the elements in the first and second rows. (3) Add a multiple of one row...