如图将抛物线l1:y=-2x^2+2轴交于点ab,与y轴正半轴交于点c.抛物线l1绕点b旋转180°.得到新的抛物线l2,它的顶点为c1,与x轴的另一个交点为a1求l2的解析式
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![如图将抛物线l1:y=-2x^2+2轴交于点ab,与y轴正半轴交于点c.抛物线l1绕点b旋转180°.得到新的抛物线l2,它的顶点为c1,与x轴的另一个交点为a1求l2的解析式](/uploads/image/z/12182830-70-0.jpg?t=%E5%A6%82%E5%9B%BE%E5%B0%86%E6%8A%9B%E7%89%A9%E7%BA%BFl1%EF%BC%9Ay%3D-2x%5E2%2B2%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9ab%2C%E4%B8%8Ey%E8%BD%B4%E6%AD%A3%E5%8D%8A%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9c.%E6%8A%9B%E7%89%A9%E7%BA%BFl1%E7%BB%95%E7%82%B9b%E6%97%8B%E8%BD%AC180%C2%B0.%E5%BE%97%E5%88%B0%E6%96%B0%E7%9A%84%E6%8A%9B%E7%89%A9%E7%BA%BFl2%2C%E5%AE%83%E7%9A%84%E9%A1%B6%E7%82%B9%E4%B8%BAc1%2C%E4%B8%8Ex%E8%BD%B4%E7%9A%84%E5%8F%A6%E4%B8%80%E4%B8%AA%E4%BA%A4%E7%82%B9%E4%B8%BAa1%E6%B1%82l2%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F)
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