牛lánɡ的diē娘都死了,跟着哥sǎo过日子。后来他们分家把一liànɡ车给他,他不稀hǎn,便牵着老牛走了。老牛给他牵线,告诉他给他要shā衣的仙女就是他的qī子。果然,织女难得来一tànɡ人间,遇见他,两人结了hūn,承诺过一bèi子。织女用腮帮āi着老牛的耳朵,算作见面礼。
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