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性质2是怎么证明的呢 #135

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yja1 opened this issue Oct 12, 2020 · 0 comments
Open

性质2是怎么证明的呢 #135

yja1 opened this issue Oct 12, 2020 · 0 comments

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@yja1
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yja1 commented Oct 12, 2020

image
image
image

下边这里是怎么推导出来的呢?对应上边3种情况?
image

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