A.将抛物线沿x轴作左右平移,记平移后的抛物线为C,其顶点为P. |
(1)求∠BAO的度数;
(2)抛物线C与y轴交于点E,与直线AB交于两点,其中一个交点为F,当线段EF∥x轴时,求平移后的抛物线C对应的函数关系式;
(3)在抛物线平移过程中,将△PAB沿直线AB翻折得到△DAB,点D能否落在抛物线C上?如能,求出此时抛物线C顶点P的坐标;如不能,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