1 1 √3 2 √3 √√3 2 (-1,0) √3 2 (0,1) (0, -1) 3 一路 6 (1,0) 1 13 (9) 2' 2 √3 √3 2 √3 2

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Q: 響 Q e B. 圖 OC 圖 D.

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