两点P(4,-9)Q(-2,3).Y轴与直线PQ交于M且向量PM=a*向量MQ则a为多少拜托了各位
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![两点P(4,-9)Q(-2,3).Y轴与直线PQ交于M且向量PM=a*向量MQ则a为多少拜托了各位](/uploads/image/z/7171494-6-4.jpg?t=%E4%B8%A4%E7%82%B9P%284%2C-9%29Q%28-2%2C3%29.Y%E8%BD%B4%E4%B8%8E%E7%9B%B4%E7%BA%BFPQ%E4%BA%A4%E4%BA%8EM%E4%B8%94%E5%90%91%E9%87%8FPM%3Da%2A%E5%90%91%E9%87%8FMQ%E5%88%99a%E4%B8%BA%E5%A4%9A%E5%B0%91%E6%8B%9C%E6%89%98%E4%BA%86%E5%90%84%E4%BD%8D)
两点P(4,-9)Q(-2,3).Y轴与直线PQ交于M且向量PM=a*向量MQ则a为多少拜托了各位
两点P(4,-9)Q(-2,3).Y轴与直线PQ交于M且向量PM=a*向量MQ则a为多少拜托了各位
两点P(4,-9)Q(-2,3).Y轴与直线PQ交于M且向量PM=a*向量MQ则a为多少拜托了各位
直线PQ是y-3=-2(x+2) M坐标是(0,-1) a=(P横坐标-M横坐标)/(M横坐标-Q横坐标)=(4-0)/(0+2)=2