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在高中数学新教材中多次出现约束条件下的多元函数最值(值域)问题,在各类考试和竞赛中,此类问题也屡见不鲜,这些问题一般来说难度较大,解法灵活,下面介绍若干常用的解法.
In the new high school mathematics textbooks, there are several problems with the value of the multivariate function under the constraint conditions. In various examinations and competitions, such problems are also common. These problems are generally more difficult and the solution is flexible. Introduce some commonly used solutions.