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导数是新教材第三册(选修Ⅱ)中的新添内容之一,教材主要介绍了导数在解题中判断函数单调及求函数极值与最值的应用,本文结合具体实例,就导数在解题中其它方面的几点应用作一下归纳,仅供读者参考.1判断函数图象例1设函数y=f(x)在定义域内可导,其图象如右图所示,则其导函数y=f′(
The derivative is one of the new contents in the third volume of the new textbook (Elective II). The textbook mainly introduces the application of the derivative in determining the monotony of functions and finding the extremum and the maximum value of the function in the new textbook. This article combines specific examples and the derivative Several other points in the problem-solving application are summarized for reader’s reference only. 1 Judging function image example 1 Let the function y=f(x) be guidable in the definition domain, and its image is shown in the right figure. The derivative function y=f’ (