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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中 
外冪性質例題
Aug 8th 2013, 03:38

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線段CD、AE二弦的延長交於P點，若CP垂直AB於F點， 線段CF=2 線段AF=5 線段BF=2.4 線段PD=6 求PE=? 我算 5分之6根號29 它答案給13分之84 .........
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