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本文将从几道数学竞赛题出发,介绍利用平面区域求一类函数的条件最值的方法。此法比较方便易行,而且最值的几何意义明确直观。
This article will start from several mathematics competitions and introduce the method of using the planar region to find the conditional maximum value of a class of functions. This method is more convenient and easy, and the geometric meaning of the most value is clear and intuitive.