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1本单元重、难点分析本单元知识的重点:指数与对数的概念及运算;指数式与对数式的等价转化;指数函数与对数函数的定义、图象和性质;指数函数与对数函数的综合应用.本单元知识的难点:根式与对数的正确计算;底数a的大小与指数函数、对数函数的图象的关系;指数函数和对数函数的图
1 The unit is heavy and difficult to analyze the focus of knowledge of this unit: the concept and operation of exponential and logarithm; equivalent conversion of exponential and logarithmic; definition, image and nature of exponential and logarithmic functions; exponential function and The comprehensive application of the number of functions.The difficulty of knowledge of the unit: the correct calculation of the root type and logarithm; the relationship between the size of base a and the image of the exponential function, logarithmic function; the graph of exponential function and logarithmic function