标签: matlab
要解决Ax = b我这样做:
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打印出来
A=[1 1; 2 2; 3 1] b=[3; 6; 5] x=A\b
但如果我有A和x我怎么得到b? 让我们说:
x=[1; 2]
b = ???
答案 0 :(得分:1)
您只需将A乘以x:b = A*x
A
x
b = A*x