优化思想——中考试题的亮点

• 作 者: 周学荣 唐明干
• 机 构: 江苏省盐城市响水中学,江苏省盐城市尚庄中学 224600,224023
• 出 处: 中学生数学
• 发表日期: 2005年06期
• 关键词: 优化思想 中考试题 一元一次不等式 石油公司 二元一次方程组 一元一次方程 函数思想 二次函数 分类讨论思想 投资方式

优化思想,是数学中的重要思想.运用优化思想解决各类问题,一直是中考试题的一个亮点.现遴选近三年全国各地有关试题进行适当的评析,希望同学们认真学习,掌握优化思想,逐步培养应用能力. 一、规划建设,寻求最佳地址 这类题型,常被视为传统题型. 例1 如图1,L1、L2、L3为三条公路,某石油公司拟在适

Optimization thinking is an important idea in mathematics. The use of optimization ideas to solve various problems has always been a bright spot in the mid-term exam questions. We are now selecting the relevant test questions throughout the country for the past three years to make appropriate assessments. We hope that the students will study hard and master the optimization ideas. Gradually develop application capabilities. I. Planning and construction, and seeking the best address for such questions, are often regarded as traditional question types. Example 1 As shown in Figure 1, L1, L2, and L3 are three roads that an oil company is planning to use.