MATLAB 列主元消去法 解方程组

clear % creat all input variable disp('(1)中为A1 (2)中为A2'); A1 = [3.01,6.03,1.99; 1.27,4.16,-1.23; 0.987,-4.81,9.34]; A2 = A1; A2(1,1) = 3.00; A2(3,1) = 0.990; b = [1,1,1]'; % displa
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