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在各地高考以及高考模拟试题中,一类已知多元变量求最值问题的题目通常以填空题的形式出现,这类题目的特点是变量多(通常为2-3个)、形式多样(不等式条件和等式条件),有些题目难度较大,学生解决起来比较困难。笔者根据自己的教学实践,从解决策略的角度对这类问题做了一个归类,与诸位同仁其勉。策略一:运用整体思想,寻求“结论整体”与“条件整体”之间
In the college entrance examination and college entrance examination simulation test questions, a class of known multivariate variables seeking the most value problems usually fill in the blank form of the problem, these topics are characterized by a large number of variables (usually 2-3), a variety of forms (inequality Conditions and equality conditions), some problems more difficult, students are more difficult to solve. According to my own teaching practice, the author made a classification of such problems from the perspective of strategy solving and encouraged his colleagues. Strategy One: Use the whole idea to seek between the “conclusion of the whole” and the “condition of the whole”