1热点问题问题1给出一个函数解析式,如何作出函数图象解答:(1)平时要牢记一些基本初等函数如:一次函数、二次函数、反比例函数、指数函数、对数函数等图象;(2)对于一些简单的函数可通过列表、描点作图;(3)对于一些复合函数可利用基本初等函数通过平移、对称和伸缩3大变换来作出我们所求的函数图象. 1 Hot Issues Problem 1 gives a function analytical formula, how to make a function image solution: (1) Always remember some basic elementary functions such as: first function, quadratic function, inverse proportional function, exponential function, logarithmic function, etc. (2) For some simple functions, we can draw through lists and sketch points; (3) For some compound functions we can use basic elementary functions to make the function image we seek through translation, symmetry, and scaling.