线性方程组的系数矩阵为[1 3;2 4]，右端常向量为2阶随机矩阵，则下列命令中可以求得线性方程组解的命令为________ A: A = [1 3;2 4]; b = rand(2,1); x = inv(A)*b; B: A = reshape(1:4,2,2); b = rand(2,1); x = inv(A)*b; C: A = [1 3;2 4]; b = rand(2,1); x = A?; D: A = [1 3;2 4]; b = rand(2,1); x = b/A;

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2022-06-08

线性方程组的系数矩阵为[1 3;2 4]，右端常向量为2阶随机矩阵，则下列命令中可以求得线性方程组解的命令为________ A: A = [1 3;2 4]; b = rand(2,1); x = inv(A)b; B: A = reshape(1:4,2,2); b = rand(2,1); x = inv(A)b; C: A = [1 3;2 4]; b = rand(2,1); x = A?; D: A = [1 3;2 4]; b = rand(2,1); x = b/A;

线性方程组的系数矩阵为[1 3;2 4]，右端常向量为2阶随机矩阵，则下列命令中可以求得线性方程组解的命令为________
A: A = [1 3;2 4]; b = rand(2,1); x = inv(A)*b;
B: A = reshape(1:4,2,2); b = rand(2,1); x = inv(A)*b;
C: A = [1 3;2 4]; b = rand(2,1); x = A?;
D: A = [1 3;2 4]; b = rand(2,1); x = b/A;

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