树高/m | 2 | 3 | 4 | 6 |
影长/m | 1.6 | 2.4 | 3.2 | 4.8 |
(1)在图中描出表示树高和对应影长的点,然后把它们连起来.
(2)连线以后观察,它们在一条直线上吗?说明树高和影长成什么关系?
(3)不计算,利用图像判断,树高8米时,影长多少米?影长4米时,树高多少米?
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