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人教版义务教育课程标准实验教科书“8.4三元一次方程组解法举例”是新添的选学内容.目的是通过解三元一次方程组进一步体会消元——代入消元、加减消元的数学方法,同时为求二次函数的解析式等知识的学习做一定的准备.
People’s Education Edition compulsory education curriculum standard experimental textbook “8.4 ternary equation system solution example ” is the addition of elective content. The purpose is to further understand the elimination of yuan by solving ternary equations - into elimination, addition and subtraction Eliminate the mathematical method, at the same time in order to find the analytical function of the quadratic function and other knowledge to do some preparation.