平静 安静 宁静
(1)房间里非常
(2)几只小船飘荡在
(3)夜晚,
欢腾 沸腾 奔腾
(4)霎时,潮头
(5)过了一会儿,响声越来越大,只见东边水天相接的地方出现了一条白线,人群又
(6)眼看着“神十”成功发射,指挥中心大厅里一片
牢固 坚固
(7)他们俩的感情很
(8)这座城墙是用混凝土浇筑的,很
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