(1)直接写出点A,B,C的坐标;
(2)将抛物线经过向下平移,使得到的抛物线与x轴交于B,两点(在B的右侧),顶点D的对应点,若,求的坐标和抛物线的解析式;
(3)在(2)的条件下,若点Q在x轴上,则在抛物线或上是否存在点P,使以为顶点的四边形是平行四边形?如果存在,求出所有符合条件的点P的坐标;如果不存在,请说明理由.
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2