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笔者在研究不等式时,回想起罗增儒教授在由《中学数学教学参考》编辑部举办的第一届“解题教学高级研讨班”上讲解的题目(题目1),罗教授运用“结论也是已知信息”求解,让笔者记忆犹新,笔者还阅读了一些与题目1有关的文献,总觉得意犹未尽。笔者再次从线性规划的角度给出题目1的求解,并给出题目1中解法3的本质解释,然后再从几何意义的角度给出求解。
While studying the inequality, the author recalls Professor Luo Zengru’s topic (topic 1) explained at the 1st “Advanced Seminar on Problem-solving Teaching” organized by the “Reference for Mathematics Teaching Reference in Middle School”. Professor Luo used “conclusion.” Also known as “Solution,” the author has memorized it. I also read some of the literature related to Question 1, and I always feel that it is still not enough. The author once again gives the solution to the problem 1 from the perspective of linear programming, and gives the essential explanation of the solution 3 in Item 1, and then gives the solution from the point of view of geometric significance.