根据1/[nx(n+3)]=1/3(1/n-1/(n+3))得到：
原式=1/3(1-1/100)=33/100
小学分数题：1/1x4+1/4x7+1/7x10+.+1/97x100
1个回答
相关问题
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1/1X4+1/4X7+1/7X10+...+1/100X103=
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1/1X4+1/4X7+1/7X10+.+1/2002X2005=?
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1/1x4+1/4x7+1/7x10+……+1/2005x2008
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1/1X4+1/4x7+1/7X10+.+1/37x40
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1/2X3X4X5+1/3X4X5X6+1/4X5X6X7.1/97X98X99X100=?
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1*4/1+4*7/1+7*10/1+.+97*100/1=?
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1*4/1+4*7/1+7*10/1...+97*100/1
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计算1/1x4+1/4x7+1/7x10+.+1/2002x2005+1/2005x2008
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先观察下列格式.1/1X4=1/3(1-1/4) 1/4X7=1/3(1/4-1/7) 1/7x10=1/3(1/7-1
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有理数的计算(1)1/1x4+1/4x7+1/7x10+...+1/2008x2011+1/2011x2014