跪求!关于二次函数! 如图,点A(2,4),作AB⊥x轴于点B,抛物线y=x^2+bx+c的顶点P在直线OA上.如图,点A(2,4),作AB⊥x轴于点B,抛物线y=x^2+bx+c的顶点P在直线OA上,且抛物线交线段AB于点Q,求线段AQ的最大
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![跪求!关于二次函数! 如图,点A(2,4),作AB⊥x轴于点B,抛物线y=x^2+bx+c的顶点P在直线OA上.如图,点A(2,4),作AB⊥x轴于点B,抛物线y=x^2+bx+c的顶点P在直线OA上,且抛物线交线段AB于点Q,求线段AQ的最大](/uploads/image/z/3949593-33-3.jpg?t=%E8%B7%AA%E6%B1%82%21%E5%85%B3%E4%BA%8E%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%21+%E5%A6%82%E5%9B%BE%2C%E7%82%B9A%EF%BC%882%2C4%EF%BC%89%2C%E4%BD%9CAB%E2%8A%A5x%E8%BD%B4%E4%BA%8E%E7%82%B9B%2C%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dx%5E2%2Bbx%2Bc%E7%9A%84%E9%A1%B6%E7%82%B9P%E5%9C%A8%E7%9B%B4%E7%BA%BFOA%E4%B8%8A.%E5%A6%82%E5%9B%BE%2C%E7%82%B9A%EF%BC%882%2C4%EF%BC%89%2C%E4%BD%9CAB%E2%8A%A5x%E8%BD%B4%E4%BA%8E%E7%82%B9B%2C%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dx%5E2%2Bbx%2Bc%E7%9A%84%E9%A1%B6%E7%82%B9P%E5%9C%A8%E7%9B%B4%E7%BA%BFOA%E4%B8%8A%2C%E4%B8%94%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%BA%A4%E7%BA%BF%E6%AE%B5AB%E4%BA%8E%E7%82%B9Q%2C%E6%B1%82%E7%BA%BF%E6%AE%B5AQ%E7%9A%84%E6%9C%80%E5%A4%A7)
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