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单调性是函数一个很重要的性质,在各种考查中都可以看到它的影子.尤其是函数性质的综合应用,更是高考的重点与热点.在这里就有一个很基础的问题,那就是函数单调性的确定问题,对于某一个函数,我们首先就得知道它的单调性分布情况,它在某一个区间到底是递增还是递减?
Monotony is a very important property of the function. It can be seen in various examinations. In particular, the comprehensive application of the nature of functions is the focus and focus of the college entrance examination. There is a very basic problem here. It is the problem of determining the monotonicity of a function. For a certain function, we must first know its monotonicity distribution. Is it increasing or decreasing in an interval?