(1)阳阳的夺冠目标是跳远比赛,没想到在跳远比赛中没拿冠军,反而在长跑比赛中拿了冠军,他自嘲道:这真是“
(2)虽然现在人们的生活水平普遍提高了,但我们依然要“忆苦思甜”,不能忘记以前苦难的日子,正所谓“
(3)考试结束后,阳阳挠着头说:“唉,平时不学好好学习真不行,题都不会做。”琪琪笑着说:“哈哈,这下你知道
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