编号 | ① | ② | ③ | ④ |
头盔 | ||||
质量(千克) | 2.03 | 1.85 | 0.89 | 1.76 |
单价(元) | 63.80 | 42.60 | 32.70 | 43.90 |
(1)上面的头盔哪一个最轻?哪一个最重?
(2)把头盔的价格按从高到低的顺序排列。
(3)有45元钱,可以买哪一个头盔?
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