(1)求点P的坐标.
(2)动点F从原点O出发,以每秒1个单位的速度在线段OA上向点A作匀速运动,连接PF,设运动时间为t秒,△PFA的面积为S,求出S关于t的函数关系式.
(3)若点M是y轴上任意一点,点N是坐标平面内任意一点,若以O、M、N、P为顶点的四边形是菱形,请直接写出点N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