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处理多变量的数学问题的常规方法是建立变量的方程组,通过解方程组完成对问题的处理;在这个过程中,一不小心就会陷入多变量方程组求解过程中的一个怪圈:方程组的消元很困难;即使达到了消元的目的,方程次数又会很高.然而多个变量的数学问题,又是中学阶段数学中十分常见的问题,在一次专题复习中,引导学生进行了合作探究.让学生掌握了处理多变量问题的基本方法.
The conventional method of dealing with multivariable mathematical problems is to establish a system of equations of the variable and to solve the problem by solving the system of equations. In this process, a cycle of solution to a multivariable equation is inadvertently involved: Equation set Of the elimination of the yuan is very difficult; even if the elimination of the purpose, the number of equations will be very high.However, the mathematical problems of many variables, but also very common in middle school mathematics problems in a special review, to guide students Collaborative Inquiry Enables students to master the basic methods of dealing with multivariate questions.