2.2.1综合法与分析法.pdf

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1、1/5 第二章第 2 节 直接证明与间接证明一、综合法与分析法课前预习学案一、预习目标：了解综合法与分析法的概念，并能简单应用。二、预习内容：证明方法可以分为直接证明和间接证明1直接证明分为和2直接证明是从命题的或出发，根据以知的定义，公里，定理，推证结论的真实性。3综合法是从推导到的方法。而分析法是一种从追溯到的思维方法，具体的说，综合法是从已知的条件出发，经过逐步的推理，最后达到待证结论，分析法则是从待证的结论出发，一步一步寻求结论成立的条件，最后达到题设的以知条件或以被证明的事实。综合法是由导，分析法是执索。b5E2RGbCAP 三、提出疑惑同学们，通过你的自主学习，你还有哪些疑惑，请把

2、它填在下面的表格中疑惑点疑惑内容课内探究学案一、学习目标让学生理解分析法与综合法的概念并能够应用二、学习过程：例1 已知 a,bR+，求证：例 2已知 a,bR+，求证：例 3.已知 a,b,cR，求证I）课后练习与提高1A 级）函数，若则的所有可能值为 ）2/5 A B C D2A 级）函数在下列哪个区间内是增函数 ）A BC D3A 级）设的最小值是 ）AB C3 D4A 级）下列函数中,在上为增函数的是 ）A BC D5A 级）设三数成等比数列，而分别为和的等差中项，则 ）A B C D不确定6A 级）已知实数，且函数有最小值，则=_。7A 级）已知是不相等的正数，则的大小关系是 _。8

3、B）若正整数满足，则9B）设图像的一条对称轴是.1）求的值；2）求的增区间；文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4

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9、编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I13/5 3）证明直线与函数的图象不相切。10B）的三个内角成等差数列，求证：综合法与分析法一、教材分析综合法与分析法作为高中数学中常用的两种基本方法，一直被学生所熟悉和应用，通过这节课的学习，学生将对这两种方法的掌握更加系统。同时也复习了有关的其他数学知识。p1EanqFDPw 二、

10、教案目标知识目标：让学生理解分析法与综合法的概念并能够应用。能力目标：提高证明问题的能力。情感、态度、价值观：养成言之有理论证有据的习惯。三、教案重点难点教案重点：让学生理解分析法与综合法的概念并能够应用。教案难点：提高证明问题的能力。四、教案方法：探究法五、课时安排：1 课时六、教案过程例1已知 a,b R+，求证：例 2已知 a,bR+，求证：例 3.已知 a,b,c R，求证 I）课后练习与提高1A 级）函数，若则的所有可能值为 ）A B C D2A 级）函数在下列哪个区间内是增函数 ）A B文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3

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18、、教案 反思申明：所有资料为本人收集整理，仅限个人学习使用，勿做商业用文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P

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25、4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I

26、1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM

27、4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I

28、1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM

29、4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1文档编码:CT3A6K3G4I1 HM4N4P4P9L3 ZN7P2B5C3I1