【数学】高一向量计算题已知Rt△ABC,∠C=90°,AC=m,BC=n,E为CD中点,连接AE并延长交BC于F,求AF的长度(用m和n表示)图:-----------------------------------------注:请用向量计算~
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![【数学】高一向量计算题已知Rt△ABC,∠C=90°,AC=m,BC=n,E为CD中点,连接AE并延长交BC于F,求AF的长度(用m和n表示)图:-----------------------------------------注:请用向量计算~](/uploads/image/z/2477180-20-0.jpg?t=%E3%80%90%E6%95%B0%E5%AD%A6%E3%80%91%E9%AB%98%E4%B8%80%E5%90%91%E9%87%8F%E8%AE%A1%E7%AE%97%E9%A2%98%E5%B7%B2%E7%9F%A5Rt%E2%96%B3ABC%2C%E2%88%A0C%3D90%C2%B0%2CAC%3Dm%2CBC%3Dn%2CE%E4%B8%BACD%E4%B8%AD%E7%82%B9%2C%E8%BF%9E%E6%8E%A5AE%E5%B9%B6%E5%BB%B6%E9%95%BF%E4%BA%A4BC%E4%BA%8EF%2C%E6%B1%82AF%E7%9A%84%E9%95%BF%E5%BA%A6%EF%BC%88%E7%94%A8m%E5%92%8Cn%E8%A1%A8%E7%A4%BA%EF%BC%89%E5%9B%BE%EF%BC%9A-----------------------------------------%E6%B3%A8%EF%BC%9A%E8%AF%B7%E7%94%A8%E5%90%91%E9%87%8F%E8%AE%A1%E7%AE%97%7E)
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