森林里正在举行动物运动会,小鹿和小兔正准备参加200米决赛,在预赛时,小鹿跑了第一,它跑到终点时,小兔离终点还有6米,大象裁判认为小鹿个大,在同一起点跑不合理,所以决定在决赛时把小鹿在起点向后退6米,决赛开始了,一声枪响,小鹿和小兔都飞快地向终点跑去,跑的速度和预赛时相同,你说这回它们谁跑第一呢?
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