% I'll get you started with the matrix in Problem 1, p. 124.
% Notice that the first row and last row are different than
% the others, so we'll manipulate those last.

%
% Also see JacobiExample1.m that we looked at briefly on Wed, Mar 11
%

n=10;  %Number of equations

B=[ones(n,1)  -4*ones(n,1)  6*ones(n,1) -4*ones(n,1)  ones(n,1)];
d=[-2 -1 0 1 2];  %See the help file to see how the diagonals are labeled:
               %  help spdiags
A=spdiags(B,d,n,n);
A(1,1)=12; A(1,2)=-6; A(1,3)=4/3;
A(n,n-2)=4/3;  A(n,n-1)=-6;  A(n,n)=-12;