解数学题时,有时会通过使所讨论的未知量x在如a≤x≤6的限制下面使问题获解。这好像“夹逼”一样,巧用这一策略,可以妙解许多数学竞赛题,现举几例说明。 When solving a mathematics problem, the problem is sometimes solved by making the unknown quantity x in question below a limit such as a≤x≤6. This seems to be the same as “squeezing”. Using this strategy, you can solve many math contest problems. Now give a few examples.