两道七年级数学题~~找人帮忙~~
(1)解方程:1/X+1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3)+......+1/(X+9)(X+10)=0(2)计算:1/(X+2)+1/(...
(1)解方程:1/X+1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3)+......+1/(X+9)(X+10)=0
(2)计算:1/(X+2)+1/(X+1)(X+3)+1/(X+2)(X+4)+......+1/(X+2007)(X+2009)
麻烦各位给个过程,详细点~~谢谢~~
另求丁博士七年级数学寒假生活20天的答案,有的唤一声~~谢(*^__^*)
一楼的:题没有错唉~~
二楼的:给个详细过程好不? 展开
(2)计算:1/(X+2)+1/(X+1)(X+3)+1/(X+2)(X+4)+......+1/(X+2007)(X+2009)
麻烦各位给个过程,详细点~~谢谢~~
另求丁博士七年级数学寒假生活20天的答案,有的唤一声~~谢(*^__^*)
一楼的:题没有错唉~~
二楼的:给个详细过程好不? 展开
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