(1)起飞后第25秒甲飞机的飞行高度是( )米.此时,乙飞机比它飞的( )(填“高”或“低”).
(2)起飞后第( )秒两架飞机的飞行高度相同,飞行高度大约是( )米.
(3)起飞后第( )秒两架飞机的飞行高度相差最大.
(4)起飞5秒内,甲飞机飞行高度与时间是否成正比例?(答“成”或“不成”)
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