抛物线y=ax^2+bx+c(a>0)交X轴于A B两点,交Y轴于C点,A点在B点的左侧,已知B点坐标为(8,0),tan角ABC=1/2,△ABC面积为8若直线EF‖X轴,从C开始,以每秒一个单位长度向X轴平移,与X轴重合时结束,并且交Y轴、
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![抛物线y=ax^2+bx+c(a>0)交X轴于A B两点,交Y轴于C点,A点在B点的左侧,已知B点坐标为(8,0),tan角ABC=1/2,△ABC面积为8若直线EF‖X轴,从C开始,以每秒一个单位长度向X轴平移,与X轴重合时结束,并且交Y轴、](/uploads/image/z/11474358-6-8.jpg?t=%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax%5E2%2Bbx%2Bc%28a%3E0%29%E4%BA%A4X%E8%BD%B4%E4%BA%8EA+B%E4%B8%A4%E7%82%B9%2C%E4%BA%A4Y%E8%BD%B4%E4%BA%8EC%E7%82%B9%2CA%E7%82%B9%E5%9C%A8B%E7%82%B9%E7%9A%84%E5%B7%A6%E4%BE%A7%2C%E5%B7%B2%E7%9F%A5B%E7%82%B9%E5%9D%90%E6%A0%87%E4%B8%BA%EF%BC%888%2C0%EF%BC%89%2Ctan%E8%A7%92ABC%3D1%2F2%2C%E2%96%B3ABC%E9%9D%A2%E7%A7%AF%E4%B8%BA8%E8%8B%A5%E7%9B%B4%E7%BA%BFEF%E2%80%96X%E8%BD%B4%2C%E4%BB%8EC%E5%BC%80%E5%A7%8B%2C%E4%BB%A5%E6%AF%8F%E7%A7%92%E4%B8%80%E4%B8%AA%E5%8D%95%E4%BD%8D%E9%95%BF%E5%BA%A6%E5%90%91X%E8%BD%B4%E5%B9%B3%E7%A7%BB%2C%E4%B8%8EX%E8%BD%B4%E9%87%8D%E5%90%88%E6%97%B6%E7%BB%93%E6%9D%9F%2C%E5%B9%B6%E4%B8%94%E4%BA%A4Y%E8%BD%B4%E3%80%81)
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