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参数方程是解几的重要内容之一,应用十分广泛,也是近几年来高考中常见的题型。本文以一道例题为中心,从不同角度去设问,启发学生如何根据实际问题的具体性质或图形的具体特征,合理选参,优化消参。引导学生挖掘消参问题中潜在的特殊性,使学生的思维层层展开,优化解题思路,提高思维能力。
The parametric equation is one of the important contents of the solution. It is widely used and is also a common question in the college entrance examination in recent years. This article focuses on an example and asks questions from different perspectives to inspire students how to properly select parameters and optimize consumption according to the specific nature of the actual problem or the specific characteristics of the graph. Guide students to explore the potential particularities of the problem of extinction, so that the students’ thinking is developed in layers, the problem-solving ideas are optimized, and the thinking ability is improved.