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代换是数学中经常使用的一种方法,通过代换,可使问题发生转化,从而起到化繁为简、化难为易的效果.常用的代换方法有以下几种. 一、整体代换例1 解方程1/(x2-2x+6)+1/(x2-11x+6)+1/(x2+13x+6)=0.
Substitution is a method often used in mathematics. By substituting, the problem can be transformed, thus simplifying and simplifying. The common substitution methods are the following. Example 1 Solution 1/(x2-2x+6)+1/(x2-11x+6)+1/(x2+13x+6)=0.