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导数的引入和定义始终贯穿着函数思想,随着课改的不断深入,导数知识考查的要求也逐渐加强,它是分析和解决函数问题不可缺少的工具.
The introduction and definition of derivative always runs through the function thought. With the continuous deepening of curriculum reform, the requirement of derivative knowledge examination also gradually strengthens. It is an indispensable tool to analyze and solve the function problem.