如图,在平面直角坐标系中,抛物线y=ax²+bx+c﹙a≠0﹚经过A﹙﹣1,0﹚B﹙3,0﹚和C﹙0,3﹚两点﹙1﹚求抛物线的解析式及对称轴﹙2﹚若点Q是抛物线对称轴上的一点 ①线段AQ+CQ取最小值时,求
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![如图,在平面直角坐标系中,抛物线y=ax²+bx+c﹙a≠0﹚经过A﹙﹣1,0﹚B﹙3,0﹚和C﹙0,3﹚两点﹙1﹚求抛物线的解析式及对称轴﹙2﹚若点Q是抛物线对称轴上的一点 ①线段AQ+CQ取最小值时,求](/uploads/image/z/2089349-53-9.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E6%8A%9B%E7%89%A9%E7%BA%BFy%EF%BC%9Dax%26%23178%3B%EF%BC%8Bbx%EF%BC%8Bc%EF%B9%99a%E2%89%A00%EF%B9%9A%E7%BB%8F%E8%BF%87A%EF%B9%99%EF%B9%A31%2C0%EF%B9%9AB%EF%B9%993%2C0%EF%B9%9A%E5%92%8CC%EF%B9%990%2C3%EF%B9%9A%E4%B8%A4%E7%82%B9%EF%B9%991%EF%B9%9A%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%E5%8F%8A%E5%AF%B9%E7%A7%B0%E8%BD%B4%EF%B9%992%EF%B9%9A%E8%8B%A5%E7%82%B9Q%E6%98%AF%E6%8A%9B%E7%89%A9%E7%BA%BF%E5%AF%B9%E7%A7%B0%E8%BD%B4%E4%B8%8A%E7%9A%84%E4%B8%80%E7%82%B9+%E2%91%A0%E7%BA%BF%E6%AE%B5AQ%EF%BC%8BCQ%E5%8F%96%E6%9C%80%E5%B0%8F%E5%80%BC%E6%97%B6%2C%E6%B1%82)
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