(元) | … | 190 | 200 | 210 | 220 | … |
(间) | … | 65 | 60 | 55 | 50 | … |
(1)根据所给数据在坐标系中描出相应的点,并画出图象.
(2)求关于的函数表达式、并写出自变量的取值范围.
(3)设客房的日营业额为(元).若不考虑其他因素,问宾馆标准房的价格定为多少元时.客房的日营业额最大?最大为多少元?
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