阅读材料:                                                  ...

来源:国语帮 3.13W

问题详情:

阅读材料:                                                  

求l+2+22+23+24+…+22013的值.                                    

解:设 S=l+2+22+23+24+…+22012+22013      ①                        

    则2S=2+22+23+24+25+…+22013+22014   ②                          

    ②-①,得2S﹣S=22014一l                                     

           即S=22014一l                                         

 ∴1+2+22+23+24+…+22013=22014一l                                  

仿照此法计算

(1)阅读材料:                                                  ...           (2)阅读材料:                                                  ... 第2张

【回答】

1)阅读材料:                                                  ... 第3张       (2)阅读材料:                                                  ... 第4张

知识点:有理数的乘方

题型:解答题

热门标签