你講的對,這個計算可以導出單元正三角形麵積為:(12+6-8)=10,該方程的物理意義清楚了。你的解法物理意義更明顯一些!
你講的對,這個計算可以導出單元正三角形麵積為:(12+6-8)=10,該方程的物理意義清楚了。你的解法物理意義更明顯一些!
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