乐乐、贝贝和欣欣三个人玩转盘游戏,指针停在红色区域乐乐胜,指针停在绿色区域贝贝胜,指针停在黄色区域欣欣胜.
① ② ③ ④
(1)乐乐想让自己获胜的可能性大,应选
(2)选
(3)选③号转盘,
(4)选
(5)欣欣想让自己获胜的可能性大,应选
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