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1、文数一轮复习指数函数的图像与性质一、教学目标1、知识与技能目标:(1)掌握指数函数的概念(能理解对a 的限定以及自变量的取值可推广至实数范围);(2)会做指数函数的图像;(3)能归纳出指数函数的几个基本性质。2、过程与方法目标:通过由指数函数的图像归纳其性质的学习过程,培养学生探究、归纳分析问题的能力。3、情感态度与价值观目标:在学习的过程中体会研究具体函数及其性质的过程和方法,如体验从特殊到一般的学习规律,认识事物之间的普遍联系与相互转化,培养学生用联系的观点看问题,提高学生抽象、概括、分析、综合的能力通过探究体会“数形结合”的思想;二、教学重点和难点教学重点:指数函数的图象和性质。教学难点
2、:指数函数的图象性质与底数a的关系。教学关键:从实际出发,使学生在获得一定的感性认识和基础上,通过观察、比较、归纳提高到理性认识,以形成完整的概念;在理解概念的基础上充分结合图象,利用数形结合来扫清障碍。课时安排:1 课时三、教法分析(一)教学方式直接讲授与启发探究相结合(二)教学手段借助多媒体,展示学生的做图结果;演示指数函数的图像四、教学过程(一)基础自测1函数 y(a23a3)ax 是指数函数,则有()Aa1 或 a2B a1 Ca 2 Da0 且 a12.函数(0,1)xyaaa且在01,上的最大值与最小值之差为12,则_a3函数12xya(0,1)aa且的图象恒过定点_.4.如图是指
3、数函数yax,ybx,ycx,ydx 的图象,则a,b,c,d与 1 的大小关系是()Aab1cd Bba1dc C1abcd Dab1d21.521.44.40.9(12)1.580.48.(2)0.80.50.90.5,又 0.90.50.90.4,0.80.50 且 a 1)(1)求 f(x)的定义域、值域;(2)讨论 f(x)的奇偶性;(3)讨论 f(x)的单调性分析 由函数结构定义分析满足的条件,进一步应用指数函数的性质分析,奇偶性判断按其定义进行点评与警示 问题(1)首先用分离常数的方法化简f(x)的表达式,然后求值域;问题(3)的单调性证明的关键是熟悉指数幂的代数变形同时注意到指
4、数函数的性质直接受到底数a取值范围的影响,因此,求解时需要对a 进行分类讨论(四)巩固提升文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F
5、2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5
6、H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S
7、1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ
8、1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7
9、F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V
10、9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N101.比较的大小:(12)_32(填“”或“”).2.设函数 f(x)a|x|(a0 且 a1),f(2)4,则()Af(2)f(1)Bf(1)f(2)Cf(1)f(2)Df(
11、2)f(2)3.不等式224122xx的解集为 _5(2009 山东卷)函数 yexexexex的图象大致为()(五)课堂小结(1)知识小结:指数函数的图象、性质及其综合应用(2)思想、方法小结:分类讨论、转化与化归、数形结合等数学思想;分离常数法、定义法等解决与指数函数有关的单调性、值域问题。(六)作业布置全品第 8 讲巩固训练五、教学后记与反思。4.文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N1
12、0文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8
13、J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S
14、8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2
15、N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2
16、U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H
17、5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1
18、W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1
19、F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F
20、5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9
21、S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:C
22、Z1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC
23、7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10文档编码:CZ1F2U8J6A6 HC7F5H5S8O9 ZD6V9S1W2N10