导读　“函数”和“不等式”是高中数学中起联结和支撑作用的主干知识 ,是贯穿于高中数学的一条主线 ,其知识点多、覆盖面广、思想丰富、综合性强 ,极易与其它知识 (方程、数列等 )建立相关联系、相互渗透和交叉 .正因如此 ,历年高考以“函数、不等式”为主体内容的压轴题频频 Introduction “Function” and “Inequality” are the backbone knowledge that plays a connecting and supporting role in high school mathematics. It is a main thread running through mathematics in high school. It has many points of knowledge, wide coverage, rich thought, comprehensiveness, (Equation, series, etc.) to establish the relationship between the mutual infiltration and cross-Because of this, over the years college entrance examination to “function, inequality” as the main content of the finale frequently