洪水páo xiào着,丛江里狂奔而来。众人yōnɡ dài的老汉清瘦的脸上都是雨水,sǎnɡ zi已经shā yǎ了 。为了群众能有序安全地逃生,他已经奋战了三天三夜,直到所有的村民撤离。他们远远地望着自己的村子,木桥开始shēn yín,最后轰然倒塌,这个村子也被浪头tūn mò了。
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