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比较两数大小是高考中常见的一类探索性问题,解这类问题常用的基本方法是比差(商)法,但在使用过程中,往往还要采用一些技术处理的手段,才能达到“比较”的目的。下面就比较两数大小中常用的一些技术处理的方法,向读者作一些介绍。 1 通过“平方”运算比较 众所周知,对于两个正数a、b,则有a>ba~2>b~2。根据此性质,把比较两个正数的大小转
Comparing the two numbers is a common exploratory problem in the college entrance examination. The basic method commonly used to solve such problems is the ratio difference (quotient) method. However, in the process of use, it is often necessary to use some technical processing methods to achieve Compare the purpose of “. The following is a comparison of some of the techniques commonly used in the two-digit number of techniques, to make some introductions to the reader. 1 Comparison by ”square" operation It is well known that for two positive numbers a and b, there are a>ba~2>b~2. According to this nature, compare the size of two positive numbers