如图,抛物线y=ax2+bx+c交x轴于点A(-3,0),点B(1,0),交y轴于点E(0,-3).点C是点A关于点B的对称点,点F是线段BC的中点,直线l过点F且与y轴平行.直线y=-x+m过点C,交y轴于D点.(1)求抛物线的函数
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![如图,抛物线y=ax2+bx+c交x轴于点A(-3,0),点B(1,0),交y轴于点E(0,-3).点C是点A关于点B的对称点,点F是线段BC的中点,直线l过点F且与y轴平行.直线y=-x+m过点C,交y轴于D点.(1)求抛物线的函数](/uploads/image/z/15222715-43-5.jpg?t=%E5%A6%82%E5%9B%BE%2C%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax2%2Bbx%2Bc%E4%BA%A4x%E8%BD%B4%E4%BA%8E%E7%82%B9A%EF%BC%88-3%2C0%EF%BC%89%2C%E7%82%B9B%EF%BC%881%2C0%EF%BC%89%2C%E4%BA%A4y%E8%BD%B4%E4%BA%8E%E7%82%B9E%EF%BC%880%2C-3%EF%BC%89%EF%BC%8E%E7%82%B9C%E6%98%AF%E7%82%B9A%E5%85%B3%E4%BA%8E%E7%82%B9B%E7%9A%84%E5%AF%B9%E7%A7%B0%E7%82%B9%2C%E7%82%B9F%E6%98%AF%E7%BA%BF%E6%AE%B5BC%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E7%9B%B4%E7%BA%BFl%E8%BF%87%E7%82%B9F%E4%B8%94%E4%B8%8Ey%E8%BD%B4%E5%B9%B3%E8%A1%8C%EF%BC%8E%E7%9B%B4%E7%BA%BFy%3D-x%2Bm%E8%BF%87%E7%82%B9C%2C%E4%BA%A4y%E8%BD%B4%E4%BA%8ED%E7%82%B9%EF%BC%8E%EF%BC%881%EF%BC%89%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%87%BD%E6%95%B0)
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