屋外寒风呼啸,汹涌澎湃的海浪拍击着海岸,溅起阵阵浪花。海上正起着风暴,外面又黑又冷,这间渔家的小屋里却温暖而舒适。地扫得干干净净,炉子里的火还没有熄,食具在搁板上闪闪发亮。挂着白色帐子的床上,五个孩子正在海风呼啸声中安静地睡着。
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