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由于三次函数的导函数是二次函数,而二次函数的性质是大家所熟知的,因此随着中学阶段导数知识的引入,三次函数在中学数学问题中就常常碰到,在高考试题中也经常出现.本文利用二次函数及导数知识对三
Since the derivative function of the cubic function is a quadratic function and the nature of the quadratic function is well known, with the introduction of derivative knowledge of the middle school stage, the cubic function is often encountered in the middle school mathematics problem. Often appear.This paper makes use of the quadratic function and derivative knowledge of three