最近,我新买了一辆自行车,意外地发现车轮上有一处红色的油漆印记.在一个阳光明媚的日子里,我骑上这辆自行车,开始放飞一段奇异的梦想:一、试想第一个问题一辆自行车的轮子上有一处红色印记,如果骑车沿笔直的道路行驶,那么从侧面看,这个印记会划出怎样的曲线呢?问题分析首先简化问题:假设这辆自行车的轮子是圆形的,这处红色印记看成一个 Recently, I bought a new bike and accidentally discovered a red paint mark on the wheel.On a sunny day, I rode the bike and began flying a strange dream: First, imagine the first Problem A bicycle has a red mark on the wheel. If you ride along a straight road, what kind of curve can this mark draw from the side? Problem Analysis First, to simplify the problem: Suppose the bicycle wheel is round Shaped, this red mark as one