《考试大纲》要求 :“掌握指数函数的概念、图象和性质 ,能用指数函数的性质解决某些简单的问题 .”指数函数是函数知识的核心内容之一 ,起着承上启下的作用 .纵观历年高考试题 ,考查指数函数的问题既符合考纲要求 ,又成为人们特别关注的热点 .1　概念题解读指数函数的概念 ,除 The “Exam Outline” requires that: “Mastering the concept, image, and nature of an exponential function can solve some simple problems with the nature of an exponential function.” The exponential function is one of the core contents of function knowledge and plays a role in linking up with others. In the annual examination questions, the problem of examining the exponential function not only meets the requirements of the syllabus, but also becomes a hot spot that people pay special attention to.