谁知1/(1*4)-1/(4*7)-1/(7*10)-1/(10*13)......-1/(2002*2005)-1/(
2个回答
(1/3)*(1-1/4+1/4-1/7+1/7-1/10+1/10.+1/2005-1/2008
=(1/3)*(1-1/2008)
=1/3*2007/2008
=669/2008
相关问题
1/1*4+1/4*7+1/7*10+.1/2002*2005+1/2005*2008
1/1*4+1/4*7+1/7*10.+1/2002*2005(简算)
1如何计算1*1/4+4*1/7+7*1/10+...+2002*1/2005
1/1X4+1/4X7+1/7X10+.+1/2002X2005=?
1*4/1 4*7/1 7*10/1 10*13/1.2005*2008/1=答案是什么
计算1/1x4+1/4x7+1/7x10+.+1/2002x2005+1/2005x2008
1/4*1+1/4*7+1/7*10+1/10*13+1/13*16=?
1/1*4+1/4*7+1/7*10+1/10*13+…+1/91*94=?
1/(1*4)+1/(4*7)+1/(7*10)+1/(10*13)+1/(13*16)+1/(16*19)+1/(19
谁知道怎么算1÷(1×4)+1÷(4×7)+1÷(7×10).1÷(2002×2005)