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在物理计算中有时会遇到求最小值和最大值问题,如果运用数学恒等变形,就可使问题大大简化,化难为易。例如:例1(99全国初中物理竞赛):某工地设计了一个提起重物的
In physical computing sometimes encounter the minimum and maximum value of the problem, if the use of mathematical identity deformation, you can greatly simplify the problem, the difficulty is easy. For example: Example 1 (99 national junior high school physics competition): a site designed to lift a heavy object