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1、 y=k/x 所以k=xy 把A代入 k=2×6=12 所以y=12/x 2、 若直線過A,則m=y/x=6/2=3 若直線過B,則m=y/x=4/3 和線段AB相交則m在這兩個之間 所以4/3≤m≤3
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