1.=(1-1/2)+(1/2-1/3)……+(1/9-1/10)=1-1/10=9/101+1/(1+2)+1/(1+2+3)+1/(1+2+3+4)+......+1/(1+2+3+...+100) =2[(1-1/2)+(1/2-1/3)+(1/3-1/4)+......+(1/100-1/101)] =2(1-1/101) =200/101亲,对我的回答满意的话,就给个好评吧。如果还有不清...
第一题:1/1*2+1/2*3+1/3*4+……1/8*9+1/9*10
1个回答
相关问题
-
1/(1*2)+1/(2*3)+1/(3*4)+K+1/(8*9)+1/(9*10)=?
-
1/1*2+1/2*3+1/3*4+···1/8*9+1/9*10简便计算
-
1*2/1+2*3/1+3*4/1+...+8*9/1+9*10/1简算
-
求1/2*1+1/3*2+1/4*3···1/9*8+1/10*9得数..
-
(2√1+1√2)/1+(3√2+2√3)/1+(1+4√3+3√4)/1+……(10√9+9√10)/1=?
-
1/1*2*3+1/2*3*4+1/3*4*5+.+1/8*9*10
-
4+2+3=9 2+2+3=7 9-1-3=5 8-1=7 7-2=5 10-1-2=7 1+7+1=9 4+5=9 1
-
1/1×2+1/2×3+1/3×4+…1/8×9+1/9×10=?
-
化简:[1/(2+√2)]+[1/(3√2+2√3)]+[1/(4√3+3√4)]+……+[1/(10√9+9√10)]
-
1+1+2+3+4+5+6+7+8+9+10*1*2*3*4*5*6*7*8*9*10=?