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映射作为函数的基础,而函数是历届高考中十分重要的一个内容,因此映射的学习必须认真.映射知识可以和集合、方程相联系,随着学习内容的增多还可以与排列、组合知识相结合.同时它可以与整式、分式、指数式、对数式、三角式等运算相联系.对映射f:A→B的理解,要抓住以下三点:(1)集合A、B及对应法则f是确定的,是一个整体,是一个系统;
Mapping as a function of the foundation, and the function is a very important part of the college entrance examination, so the mapping of the study must be serious. Mapping knowledge can be associated with the collection, equation, with the learning content can also be combined with permutation, combination of knowledge At the same time, it can be associated with integer, fractional, exponential, logarithmic, trigonometric and other operations.On the understanding of mapping f: A → B, we should grasp the following three points: (1) Set A, B and corresponding law f is determined, is a whole, is a system;