(1)在平面直角坐标系中,点,点,若【点,直线,】则求点的坐标;为了解决此问题小洋同学做了如图所示的操作:在直线上取了不与重合的点,找到了点关于直线的对称点.
①请你根据小洋同学的做法,若【点,直线,】,则此时点的坐标为______;
②已知圆的半径为,若【圆,直线,】,请你在图中画出所有满足要求的点的轨迹;
(2)在平面直角坐标系中,已知点,.
①已知,圆的半径为1,【圆,线段,】,当点在线段上时,求的取值范围;
②当,,圆的半径为,【线段,圆,】,点在圆上时,直接写出的最大值与最小值的差.
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