根据二次函数图象上三个点的坐标,求出函数的解析式 (1).(―1,3),(1,3) ,( 2,6 ) (2).(―1,―1),(0,―2),(1,1) (3).(―1,0),(3,0),(1,―5) (4).(1,2),(3,0),(―2,20)
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![根据二次函数图象上三个点的坐标,求出函数的解析式 (1).(―1,3),(1,3) ,( 2,6 ) (2).(―1,―1),(0,―2),(1,1) (3).(―1,0),(3,0),(1,―5) (4).(1,2),(3,0),(―2,20)](/uploads/image/z/8895574-46-4.jpg?t=%E6%A0%B9%E6%8D%AE%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E5%9B%BE%E8%B1%A1%E4%B8%8A%E4%B8%89%E4%B8%AA%E7%82%B9%E7%9A%84%E5%9D%90%E6%A0%87%2C%E6%B1%82%E5%87%BA%E5%87%BD%E6%95%B0%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F+%281%29.%28%E2%80%951%2C3%29%2C%281%2C3%29+%2C%28+2%2C6+%29+%282%29.%28%E2%80%951%2C%E2%80%951%29%2C%280%2C%E2%80%952%29%2C%281%2C1%29+%283%29.%28%E2%80%951%2C0%29%2C%283%2C0%29%2C%281%2C%E2%80%955%29+%284%29.%281%2C2%29%2C%283%2C0%29%2C%28%E2%80%952%2C20%29)
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