精卫填海
传说炎帝(神农氏)有一个小女儿,叫女娃,她想横渡东海,因为力气不足,被淹死在海里。女娃痛恨东海吞噬(shì)了她的生命,又怕别人再被大海吞没(mò),于是她就变成了—只大鸟,不断地从西山衔(xián)来小树枝、小石头投入东海,决心把海填平。她衔石填海、勤劳不息的精神,被人们一代一代传颂,直到今天。
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