📚 Case Study in Action: CCEA IGCSE Further Mathematics | IGCSE CCEA 进阶数学案例分析实战演练
This article works through exam-style case studies for CCEA IGCSE Further Mathematics, focusing on how pure and applied techniques are combined in real problem contexts. Each section presents a scenario, the key method, and a model solution.
本文通过 CCEA IGCSE 进阶数学的考试风格案例，讲解如何在真实问题情境中综合运用纯数学与应用数学技巧。每节给出一个情境、关键方法和参考解答。
1. Case Study Overview | 案例总览
CCEA Further Mathematics questions often embed a single real-world setting across several parts. The marker expects clear structure: define variables, state formulas, substitute, solve, and interpret.
CCEA 进阶数学题目常把多个小题嵌入同一个真实情境。阅卷者希望看到清晰结构：设变量、列公式、代入、求解并解释结果。
In a case study, you may move from algebra to calculus to statistics within one problem, so you must keep units and labels consistent throughout.
在一个案例中，你可能需要在同一题里从代数转到微积分再到统计，因此单位与符号必须全程一致。
2. Modelling a Roller Coaster with Quadratics | 用二次函数
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