他每天或是拿着枪,带着狗到森林里去打猎,或到海边去捕鱼,还把捕到的活山羊畜养起来。后来他竟有了成群的山羊,可以常喝羊奶,吃羊肉。
1.鲁滨逊流落荒岛,面临着没有食物吃的困境。但他没有绝望,而是积极主动想办法。他的办法有:2.鲁滨逊真是个
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