亮剑高考——高考数学45天冲刺新东方优能中学教育刘淳大纲一、复习中常见的问题二、如何总结题型三、现阶段复习建议你是否有如下困惑一、上课听得懂的题目,考试时依然不会做二、考试时似曾相识的题目怎么都做不出来三、考试检查时经常把做对的题目改成错的四、公式定理全都懂,就是用不上劲244768264aaaaa已知等差数列满足na则56________aa2447682aaaaa211111(3)2(3)(6)(5)(7)adadadadad22222211111169218361235aaddaaddaadd221143680aadd22114(920)aadd例题:114(4)(5)adad解:2447682aaaaa2468468()aaaaaa4648()()aaaa564aa244768264aaaaa已知等差数列满足na则56________aa例题:解:27120xx(3)(4)0xx244768264aaaaa已知等差数列满足na则56________aa例题:20xbxc()()0xpxq244768264aaaaa已知等差数列满足na则56________aa例题:2()0xpqxpq2447682aaaaa2468468()aaaaaa4648()()aaaa564aa244768264aaaaa已知等差数列满足na则56________aa例题:解:2221xxxaaa222()10xxxaaa222()()10xxaaaa22()()0xxaaaa解不等式2221(01)xxxaaaaa且练习:解:如何总结题型:244768264aaaaa已知等差数列满足na则56________aa解不等式2221(01)xxxaaaaa且一、找出题目的关键点(识别标志)二、把同种类型题目归类如何总结题型:一、找出题目的关键点(识别标志)二、把同种类型题目归类三、归纳总结此类题型的解题方法(步骤)20xbxc()()0xpxq2()0xpqxpq总结题型举例:总结题型举例:总结题型举例:简化(熟练使用)公式总结题型举例:2212(1)()ABkxx20axbxc221212(1)[()4kxxxx224(1)[()]bckaa2224(1)()backa2(1)ka15()nnaxax154nnaax3x135(3)nnaa512xx1512nnaa已知数列满足,na求的通项公式。na11a例题:418xx1418nnaa已知数列满足,na求的通项公式。na12a164(6)nnaa例题:2833xx12833nnaa已知数列满足,na求的通项公式。na11a1828()535nnaa例题:xkxb1nnakab已知数列满足,na求的通项公式。na1()nnaxkax小结:113()555nnnnnaa153nnnaa已知数列满足,na求的通项公式。na11a113()555nnnnnaa13()5nnnbb例题:1151333nnnnaa153nnnaa已知数列满足,na求的通项公式。na11a1513nnbb513xx1353()232nnbb例题:1135(3)nnnnaa153nnnaa已知数列满足,na求的通项公式。na11a11335()22nnnnaa例题:1124(2)nnnnaa142nnnaa已知数列满足,na求的通项公式。na12a1124(2)nnnnaa例题:11()nnnnabkab1nnnakab已知数列满足,na求的通项公式。na11()nnnnbbakakbkb小结:1133(3)nnnnaa133nnnaa已知数列满足,na求的通项公式。na12a11133nnnnaa特例:现阶段复习建议一、练习贵精不贵多,一定要检查二、做好一道题,胜过胡做百道题题现阶段复习建议现阶段复习建议一、练习贵精不贵多,一定要检查二、做好一道题,胜过胡做百道题题三、模拟卷做题时间2:6四、做好错题本从善如登,从恶如崩谢谢!新东方优能中学教育刘淳