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有隐含条件的追击问题,其解题关键就在于能正确地挖掘出隐含条件并合理运用,笔者尝试对这一问题分类进行探讨. 1.最大距离的判定若习题是要求解最大距离,则两物体的速度总是由前大后小逐渐发展到两物体速度相等,此后速度或相等或前小后大.这样,在两物体速度相等时距离达到最大. 例1 如图1所示,A、B两物体用一根轻弹簧相连,放在光滑水平面上,已知A物体
There are implicit conditions chase problem, the key to solve the problem is that it can correctly excavated the implied conditions and rational use, I try to discuss the classification of this problem. 1. The maximum distance to determine If the problem is to solve the maximum distance, Then the speed of the two objects is always gradually developed from before the small after the two objects to the same speed, then the speed or the same before or after the small, so that when the two objects at the same speed to achieve the maximum speed.Example 1 As shown in Figure 1, A, B two objects connected by a light spring, on a smooth horizontal surface, known A object