(1)将一个“7”字图形按如图摆放在平面直角坐标系中,记为“7”字图形,其中顶点位于轴上,顶点,位于轴上,为坐标原点,则的值为____.
(2)在(1)的基础上,继续摆放第二个“7”字图形得顶点,摆放第三个“7”字图形得顶点,依此类推,…,摆放第个“7”字图形得顶点,…,则顶点的坐标为_____.
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