运动会开始了。随着一声枪响,跑步健儿们就像离弦的箭一样,争先恐后地向着终点跑去,尽管一个个都是汗流浃背,可谁也不甘示弱。拉拉队站了起来,高声呐喊道:“加油,加油!”跳远的同学猛跑几步,脚用地,身子一弓,向前一跃,像猛虎扑食一样腾空而起,然后轻轻地落到木沙坑里。同学们的表现真精彩啊!
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