1/1x4+1/4x7+1/7x10+……+1/97x100SOS!SOS!

来源：学生作业帮助网编辑：六六作业网时间：2024/12/04 02:05:33

1/1x4+1/4x7+1/7x10+……+1/97x100SOS!SOS!1/1x4+1/4x7+1/7x10+……+1/97x100SOS!SOS!1/1x4+1/4x7+1/7x10+……+1/

1/1x4+1/4x7+1/7x10+……+1/97x100SOS!SOS!
1/1x4+1/4x7+1/7x10+……+1/97x100
SOS!
SOS!

1/1x4+1/4x7+1/7x10+……+1/97x100SOS!SOS!
1/1x4+1/4x7+1/7x10+……+1/97x100
=(1-1/4)/3+(1/4-1/7)/3+(1/7-1/10)/3+.+(1/97-1/100)/3
=(1/3)(1-1/4+1/4-1/7+1/7-1/10+.+1/97-1/100)
=(1/3)(1-1/100)
=(1/3)(99/100)
=33/100.

1/1x4+1/4x7+1/7x10+……+1/2005x2008佼佼我 1/1x4+1/4x7+1/7x10+……+1/97x100SOS!SOS! 1/1x4+1/4x7+1/7x10+……+1/2005x2008 计算：1/（1x4）+1/（4x7）+1/(7x10)…+1/(298x301) 1X4/1+4X7/1+7X10/1+…+2005X2008/1=? 1/1x4 + 1/4x7 + 1/7x10 +…+ 1/91x94=? 1X4/1+4X7/1+7X10/1+…+2005X2008/1=? 100x( 3/1x4 + 3/4x7 +3/7x10 +.3/97x100)=?注：1x4、4x7、7x10等均为分母的大小 1/1x4+1/4x7+1/7x10+1/10x13+1/13X16 简便计算1/1x4+1/4x7+1/7x10+***+1/2007x2010 1/1X4+1/4X7+1/7X10+...+1/100X103= 1/(1x4)+1/(4x7)+1/(7x10)+...+1/(91x94) 1/1X4+1/4X7+1/7X10+.+1/2002X2005=?有规律的 1/1x4 +1/4x7+1/7x10+.+1/100x103 急用啊小学分数题：1/1x4+1/4x7+1/7x10+.+1/97x100 计算 1X4分之一+4x7分之一+7x10分之一+...+2008x2011分之一的值 3/(1X4)+3/(4X7)+3/(7X10)+3/(10X13)+3/(13X16) 1/1x4十1/4x7+1/7x10+……1/100X103这题怎么做