1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/1要计算过程,得数/=几分之几1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/1
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1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/1要计算过程,得数/=几分之几1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/11*
1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/1要计算过程,得数/=几分之几1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/1
1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/1要计算过程,得数
/=几分之几
1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/1
1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/1要计算过程,得数/=几分之几1*3/1+3*5/1+5*7/1+7*9/1+.+97*99/1+99*101/1
我想你的意思应该是 三乘五的积分之一 那应该写成1/(3*5)
我就姑且按这个解答了 理解不对的话说一声
1/(3*5)+1/(5*7)+1/(7*9)+...+1/(97*99)+1/(99*101)
=(1/2)[2/(3*5)+2/(5*7)+2/(7*9)+...+2/(97*99)+2/(99*101)]
=(1/2)[(1/3-1/5)+(1/5-1/7)+(1/7-1/9)+...+(1/97-1/99)+(1/99-1/101)]
=(1/2)[1/3-1/5+1/5-1/7+1/7-1/9+...+1/97-1/99+1/99-1/101]
=(1/2)[1/3-1/101]
=(1/2)[98/303]
=49/303
1-3+5-7+...
(1+1/3+1/5+1/7)*(1/3+1/5+1/7+1/9)-(1+1/3+1/5+1/7+1/9)*(1/3+1/5+1/7) 简算(1+1/3+1/5+1/7)*(1/3+1/5+1/7+1/9)-(1+1/3+1/5+1/7+1/9)*(1/3+1/5+1/7) 简便计算
(1/3+1/5+1/7)*(1/5+1/7+1/9)-(1/3+1/5+1/7+1/9)*(1/5+1/7)=?
1,3,5,7,9.
化简5/7:1/3
7/3*[7/5-(7/3+5/1)]简便算法
1/1*3+1/1*3*5+1/1*3*5*7+1/1*3*5*7*9-73/945
1/1*3*5+1/3*5*7+1/5*7*9.+1/95*97*99
1/1×3+1/3×5+1/5×7+1/7×9.+1/2011×2013
简算:1/1*3+1/3*5+1/5*7+1/7*9+1/9*11
1/1*3+1/3*5+1/5*7+1/7*9+...1/17*19=
计算1/(1×3)+1/(3×5)+1/(5×7)+1/(7×9)+.+1/(19×21)
1/1×3+1/3×5+1/5×7+1/7×9+.+1/2013×2015
1/1*3+1/3*5+1/5*7+1/7*9+.+1/101*103
帮帮忙1/1*3+1/3*5+1/5*7+1/7*9+...1/99*101
1/1*3+1/3*5+1/5*7+1/7*9+1/49*51=
计算:1/1×3+1/3×5+1/5×7+1/7×9``````+1/2001×2003
(1*3)/1+(3*5)/1+(5*7)/1+(7*9)/1+(9*11)/1