Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
机器人从 (0, 0) 沿方向 (3, 4) 直线运动。障碍物在 (8, 1) ,半径2。轨迹是否经过障碍物?
机器人从 (0, 0) 沿方向 (3, 4) 直线运动。障碍物在 (8, 1) ,半径2。轨迹是否经过障碍物?
Natural Language
Math Input
Extended Keyboard