解决某个范畴中的数学问题时,通过寻找恰当的对应法则,把原数学问题转化为另一个范畴中的数学问题,再在这个范畴中处理,从而达到解决原问题的目的.这样的思维方法称为“对应思想”.计数问题是高中数学的难点问题,若能恰当将问题转化,把原数学问题转化为另一个范畴中易于计数的数学问题,则可起到豁然开朗,柳暗花明的奇效.本文介绍对应 When solving mathematical problems in a certain category, we can solve the original problem by finding the appropriate corresponding law, transforming the original math problem into a mathematical problem in another category and then dealing with it in this category Called the “corresponding idea.” Counting is a difficult problem in high school mathematics, if the problem can be properly converted, the original mathematical problems into another category of mathematical problems easy to count, you can play a clear, Miraculous. This article describes the corresponding