Prove that the product of any two consecutive odd numbers is

问题描述:

Prove that the product of any two consecutive odd numbers is 1 less than a multiple 4.
英文好的帮帮忙~我不太理解这题的意思.是证明题.
1个回答 分类:英语 2014-12-12

问题解答:

我来补答
题目翻译:证明任意2个连续奇数的乘积加1是4的倍数.

证明:设这两个奇数是2k-1,2k+1(k是任意整数),那么:
(2k-1)(2k+1)+1
=4k^2-1+1
=4k^2 是4的倍数
得证.
 
 
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