抛物线y=ax方+bx+c交x轴于AB两点,交y于点C,已知抛物线的对称轴为x=1,B(3,0),C(0,-3)在抛物线的对称轴上是否存在一店P,使P到B,C两点距离之差最大?
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![抛物线y=ax方+bx+c交x轴于AB两点,交y于点C,已知抛物线的对称轴为x=1,B(3,0),C(0,-3)在抛物线的对称轴上是否存在一店P,使P到B,C两点距离之差最大?](/uploads/image/z/10234059-51-9.jpg?t=%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax%E6%96%B9%2Bbx%2Bc%E4%BA%A4x%E8%BD%B4%E4%BA%8EAB%E4%B8%A4%E7%82%B9%2C%E4%BA%A4y%E4%BA%8E%E7%82%B9C%2C%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%E4%B8%BAx%3D1%2CB%283%2C0%29%2CC%280%2C-3%29%E5%9C%A8%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%E4%B8%8A%E6%98%AF%E5%90%A6%E5%AD%98%E5%9C%A8%E4%B8%80%E5%BA%97P%2C%E4%BD%BFP%E5%88%B0B%2CC%E4%B8%A4%E7%82%B9%E8%B7%9D%E7%A6%BB%E4%B9%8B%E5%B7%AE%E6%9C%80%E5%A4%A7%3F)
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