1
[1 0 0 0] ---
[1 1 0 0] 3
A = [0 0 8 1] find A
[0 0 0 8]
[B 0]
A =[0 C]
答案是
1 1
--- ---
3 3
B = [1 0] C = [2 1/12]
[1/3 0] [0 2 ]
1 1
我不種 --- 和 --- 怎麼來的
3 12
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