将上述代码整合成一个

当然，以下是将上述内容整合到一个完整的MATLAB脚本示例，用于处理含有未知数的12阶行列式等于0的问题：

% 假设 A 是一个12x12的系数矩阵，b 是一个12维的常数向量

% 检查方程组 Ax = b 是否有解
try
    % 使用 linsolve 解决线性方程组
    x = linsolve(A, b);

    % 若结果为空向量，提示有无穷多解或无解
    if isempty(x)
        disp('The linear system has infinitely many solutions or is inconsistent.');
        
        % 检查矩阵秩
        rank_A = rank(A);
        if rank_A < size(A, 1)
            fprintf('The system is singular with infinitely many solutions.\n');
        else
            fprintf('The system is inconsistent.\n');
        end
        
        % 或者使用 SVD 分析
        [U, D, V] = svd(A);
        inf_sol = any(diag(D) == 0);
        if inf_sol
            disp('The system has infinitely many solutions based on SVD.');
        end
    else
        fprintf('Solution found: x = %s\n', mat2str(x));
    end
catch ME
    disp(['Error occurred: ' char(ME.message)]);
end