为什么3/(6n-5)(6n+1)=1/2(1/6n-5-1/6n+1)
1个回答
展开全部
因为 (6n+1)-(6n-5)=1+5=6
所以 3=(1/2)[(6n+1)-(6n-5)]
所以
3/(6n-5)(6n+1)
=(1/2)[(6n+1)-(6n-5)]/(6n-5)(6n+1)
=(1/2)[1/(6n-5)-1/(6n+1)]
所以 3=(1/2)[(6n+1)-(6n-5)]
所以
3/(6n-5)(6n+1)
=(1/2)[(6n+1)-(6n-5)]/(6n-5)(6n+1)
=(1/2)[1/(6n-5)-1/(6n+1)]
本回答由提问者推荐
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
