论文部分内容阅读
纵观近几年的高考数学试题,函数的零点一直是高考的重点考查内容,且呈逐年上升的趋势.在2013年和2014年的全国卷中仅以填空题的形式进行了考查,但在2015年和2016年的全国卷中开始以解答题的形式进行呈现,且试题的难度和对考生能力的要求越来越高.解决函数的零点问题主要有三种思想方法:图象法,即找函数y=f(x)的图象与x轴交点的横坐标;解方程法,即找方程f(x)=0
Throughout the math test in recent years, the zero point of the function has always been the focus of the college entrance examination examinations, and showed a rising trend year by year in 2013 and 2014 in the national volume only to fill in the blank form of examination, However, in the whole country in 2015 and 2016, the questionnaire was presented in the form of answer questions, and the difficulty of the test questions and the requirement of the examinee’s ability are getting higher and higher.There are mainly three ways to solve the zero point of the function: the image law, That is to find the function y = f (x) of the image and the x-axis intersection of the abscissa; solution equation method, that find the equation f (x) = 0