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函数是描述客观世界变化规律的重要数学模型.而函数的单调性在如何刻划这一变化规律中起着重要的作用,是函数学习的一个关键内容.本文就关于函数单
Functions are important mathematical models that describe the changing laws of the objective world. The monotonicity of functions plays an important role in how to characterize this law of change. It is a key content of function learning.