How do I show this matrix in Matlab?
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n=50000
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the cyclist
le 3 Oct 2021
N = 5; % Change this to 50000 for your case
a = 3; % The diagonal value
b = -1; % The off-diagonal value
% Create the matrix
M = diag(a*ones(1,N)) + diag(b*ones(1,N-1),1) + diag(b*ones(1,N-1),-1);
% Create the vector
v = [2; ones(N-2,1); 2];
% Solve [See https://www.mathworks.com/help/matlab/ref/mldivide.html for details]
x = M\v
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