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一、学习函数的单调性需掌握的主要问题1·什么是增函数?什么是减函数?2·如何理解函数的单调性,求函数的单调区间时应注意哪些问题?3·函数单调性的主要
First, the monotony of the learning function to master the main issues 1 What is the increase function? What is a decrease function? 2? How to understand the monotonicity of the function, find the monotonic range of the function should pay attention to what issues? 3. Monotonic function main