!!!!!!!!!!!!!!!!!!!!!!!!!
First of all, this is a Matlab Question, and it is veryimportant to me.
Do not worry, I almost done 70% part of these problem , and i amonly worry about part D,E and F.

this is my code
% we want to write as [A][Y]=[B]
% Here, Y is unknows
function [Yhistory,ErrorX,ErrorR,Iter] =Jacobi(L,a,YL,YR,M,tolX,tolR)
M= 201; % Number of points along cable to calculate Y(x)
L= 10; % Distance between supports (m)
a= 2; % Physical characteristic of cable (see problem)
YL= 20; %
PayPal Gateway not configured
PayPal Gateway not configured