Use the following template. 

Convergence Speed Problem

% Generate your matrices A, D, L and U here.

% Generate your iteration matrices for Jacobi and GS here.
J=
G=

% Compute the spectral radius here for J and G. Use the function max and abs.

% Compute the convergence rate here. Do not change the names crJ and crGS.
crJ=
crGS=

SGS Problem

% Generate your matrix, rhs b, initial guess and tolerance here.

x=sgs(A,b,x0,eps); % make sure to name your solution x.

% Write your function here. Similar structure can be used here.
% Check homework solutions for sample codes.
function x=sgs(A,b,x0,tol)

end