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在数学学习中,转化是重要的数学思想,代换则是常用的解题方法。当数学问题结构较为复杂、变元较多时,引入一些新的变量进行代换以简化其结构,从而达到解决问题的目的,这种方法叫做变量代换法。下面举例说明几种不同的变量代换解题法在高中数学中的运用。一、三角变量代换对于数学问题中出现的种种难题,我们可以利用转换思想的方式进行解决,比如,变量代换法就是解决数学问题的有效方法。变量代换方法中最普遍,同时
In mathematics learning, translation is an important mathematical thought, substitution is a commonly used method of solving problems. When the structure of mathematical problems is complicated and there are many variables, some new variables are introduced to simplify the structure so as to solve the problem. This method is called variable substitution method. The following examples illustrate the use of several different variable substitution problem-solving in high school mathematics. First, the triangular variable substitution Mathematical problems in the emergence of a variety of problems, we can use the transformation of the way to solve the problem, for example, variable substitution method is an effective way to solve mathematical problems. The most common method of variable substitution, at the same time