天气预报15天查询> 旅游> 同底数幂相乘底数什么指数什么

同底数幂相乘底数什么指数什么

更新时间: 2021-05-05 07:12:20     

1、同底数幂的乘法:(1)底数相同并且都为正数时,按法则来做。(2)底数相同并且都为负数时,按法则来做。(3)底数有负数有正数时,把底数统一起来,再按同底数幂的乘方法则来做。

2、先按同底数幂相乘法则计算,然后计算如果指数是偶数,直接去掉负号,如果指数是奇数,把负号提到幂的前面。

关键词: 底数 相乘 什么 指数

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-547377/ | 耗时:0.3474 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=547377 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=547377 LIMIT 0,1
select * from tbl_Articles_sphinx where id=547377 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1076349,3404449,1160768,927944,891897,482278,1147086,2069283,3403183,471944,1544070,1171492,2708250,3150087,452251,3294612,1480978,589356,779097,919625,722348,1902680,2174082,988197,966128,2477229,3364147,2273296,2588128,435855) ORDER BY field (ArticleID,1076349,3404449,1160768,927944,891897,482278,1147086,2069283,3403183,471944,1544070,1171492,2708250,3150087,452251,3294612,1480978,589356,779097,919625,722348,1902680,2174082,988197,966128,2477229,3364147,2273296,2588128,435855)