(1)求抛物线的解析式;
(2)如图1,点D在第二象限的抛物线上,连接交y轴于点E,设点D的横坐标为m,线段的长为d,求d与m的函数解析式;
(3)如图2,在(2)的条件下,点F在第一象限的抛物线上,点G在上,点H在的延长线上,,连接,,,交于点K,交于点Q,,连接,,过点K作,交x轴于点R,若,求点F的坐标.
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