阳光小学学生作息时间表(上午) | |
8:00-8:20 | 晨读 |
8:30-9:10 | 第一节课 |
9:10-9:15 | 课间操 |
9:25-10:05 | 第二节课 |
10:05-10:10 | 眼保健操 |
10:20-11:00 | 第三节课 |
(2)上午10:09同学们正在学校做什么?
(3)学生们上晨读用了多长时间?
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