(1)若点A(4,0).
①当点B为(3,0),如图所示,平移线段AB,在点P1(2,0),P2(1,0),P3(1,0),P4(,0)中,连接点A与点 的线段的长度为d(AB,⊙O);
②当点B为(4,1),求线段AB到⊙O的“极大距离”所对应的点A´的坐标;
(2)若点A(4,4),d(AB,⊙O)的取值范围是 .
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