Setting up the matrix:

$($a$)$ Construct the matrix A$114$ in MATLAB$/$python$.($You should be able to do this in only a few

lines of code with the help of the diag or np$.$diag function. In particular, you should figure

out what the commands diag$($v$),$ diag$($v$,1)$ and diag$($v$,-1)$ do when v is a vector or $1$D

array.$)$ Save a copy of this matrix in a variable named A$9($remember$,$ in python you need to use

A$9=$ A$.$copy$()).$

$($b$)$ Now construct the right hand side vector $\backslash$rho $.$ This should be a $114\backslash$times $1$ vector such that the jth

entry of $\backslash$rho is