导数是新教材中增加的内容 .利用导数方法考察函数的单调性及极值 (最值 )问题比传统的方法要简便得多 .下面看看今年高考试题中关于这方面知识的运用 .一、运用导数知识判定函数的增减性及确定单调区间运用导数求函数单调性的方法是 :设函数 y =f(x)在区间 [a,b]上连续 ,在 (a The derivative is the added content of the new textbook. Using the derivative method to examine the monotonicity and extreme value (maximum value) of the function is much simpler than the traditional method. Let’s take a look at the use of this knowledge in this year’s high exam questions. The use of derivative knowledge to determine the increase and decrease of a function and the use of a derivative to determine the monotonic interval to determine the monotonicity of the function are: Let the function y = f(x) be continuous in the interval [a,b], in (a