函数零点是新课标教材的新增内容之一,纵观近几年全国各地的高考试题,经常出现一些与零点有关的问题。它常以选择题,填空题的形式出现,也可以在解答题中与其他知识交汇后闪亮登场。可以说零点成为了高考新的热点、亮点和生长点。如何判定一个函数的零点以及零点的个数以及由 Function zero is one of the new content of the new curriculum standard textbooks, longitudinal examination of the college entrance examination papers throughout the country in recent years, often with some zero-related issues. It is often a multiple choice, fill in the blank form of the problem, you can also answer questions in the intersection with other knowledge after the shiny debut. Zero can become a new hot college entrance examination, highlights and growth points. How to determine a function of zero and the number of zero and by