(1)请完成表格.
圆环个数 | 1 | 2 | 3 | 4 | 5 | 6 | … |
拉紧后长度 | | | | | | | |
(2)根据表中规律,则11个圆环拉紧后的长度是多少厘米?
(3)设环的个数为x,拉紧后总长为L,你能用一个关系式表示你发现的规律吗?
(4)若拉紧后的长度是151厘米,它由多少个铁环扣成的?
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