化简:x(x+1)分之1+（x+1)(x+2)分之1+(x+2)(x+3)分之1+.+（x+2006)(x+2007)分之1
1个回答
展开全部
1/x(x+1)=1/x-1/(x+1)
1/(x+1)(x+2)=1/(x+1)-1/(x+2)
.
1/(x+2006)(x+2007)=1/(x+2006)-1/(x+2007)
x(x+1)分之1+（x+1)(x+2)分之1+(x+2)(x+3)分之1+.+（x+2006)(x+2007)分之1
=1/x-1/(x+1)+1/(x+1)-1/(x+2)+.+1/(x+2006)-1/(x+2007)
=1/x-1/(x+2007)
=2007/x(x+2007)
1/(x+1)(x+2)=1/(x+1)-1/(x+2)
.
1/(x+2006)(x+2007)=1/(x+2006)-1/(x+2007)
x(x+1)分之1+（x+1)(x+2)分之1+(x+2)(x+3)分之1+.+（x+2006)(x+2007)分之1
=1/x-1/(x+1)+1/(x+1)-1/(x+2)+.+1/(x+2006)-1/(x+2007)
=1/x-1/(x+2007)
=2007/x(x+2007)
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
