论文部分内容阅读
我们把通过建立二次函数来解决的实际问题 ,称为二次函数应用题 .在 2 0 0 0年各地中考试题中 ,这类题型设计新颖 ,别出心裁 .本文通过典型试题 ,介绍这类试题的命题特点及解题策略 .图 1例 1 某幢建筑物 ,从 1 0米高的窗口Ａ用水管向外喷水 ,喷出的水流呈抛物线状 (抛物线所
We solve the practical problem by establishing a quadratic function, which is called a quadratic function application problem. In the mid-level test in 2000, these types of questions are novel in design and ingenuity. This article introduces typical questions by introducing such questions. Propositional features and problem solving strategies. Figure 1 Example 1 A building was sprayed with water from a 10-m high window A pipe, and the spouted water flow was parabolic (parabolic