No, as far as I can see you have said that the left side is either ab or −ab and that the right side is either ab or −ab, but you haven't argued that both ... ... <看更多>
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No, as far as I can see you have said that the left side is either ab or −ab and that the right side is either ab or −ab, but you haven't argued that both ... ... <看更多>
我發現周易的線性代數課本中， det(AB)=det(A)*det(B)的証明怪怪的。 ... 書中證明約略如下: │A I│ │ A I│ │I A │ |A||B| ... ... <看更多>
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b +ab. 41794 likes · 35 talking about this. Website: www.bplusab.com Instagram: bplusab. ... <看更多>