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通过具体实例理解二分法的概念,掌握运用二分法求简单方程近似解的方法,从中体会函数的零点与方程根之间的联系及其在实际问题中的应用;能借助计算器用二分法求方程的近似解,让学生能够初步了解逼近思想;体会数学逼近过程,感受精确与近似的相对统一;通过具体实例的探究,归纳概括所发现的结论或规律,体会从具体到一般的认知过程。
Through the concrete example to understand the concept of dichotomy, grasp the use of dichotomy to find the approximate solution of the simple equation method, from which the zero point of the function and the relationship between the root of the equation and its application in practical problems; can use the calculator to calculate the equation The approximation solution, so that students can initially understand the approximation thought; experience mathematical approximation process, feel the relative unity of precision and approximation; through the study of specific examples, summarize found conclusions or laws, understand the specific to the general cognitive process.