1/2+5/6+1/12+19/20+29/30.9701/9702+9899/9900=
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1/2+5/6+1/12+19/20+29/30.9701/9702+9899/9900=1/2+5/6+1/12+19/20+29/30.9701/9702+9899/9900=1/2+5/6+1/
1/2+5/6+1/12+19/20+29/30.9701/9702+9899/9900=
1/2+5/6+1/12+19/20+29/30.9701/9702+9899/9900=
1/2+5/6+1/12+19/20+29/30.9701/9702+9899/9900=
1/2+5/6+11/12+19/20+29/30+...+9701/9702+9899/9900 =1/2+(1-1/6)+(1-1/12)+(1-1/20)+(1-1/30)+……+(1-1/9702)+(1-1/9900) =1/2+[1-(1/2-1/3)]+[1-(1/3-1/4)]+[1-(1/4-1/5)]+[1-(1/5-1/6)]+……+[1-(1/98-1/99)]+[1-(1/99-1/100)] =1*100+1/2-1/2+1/3-1/3+1/4-1/4+1/5-1/5+1/6-1/6+……1/98-1/98+1/99-1/99+1/100 =100+1/100 =100又1/100
1/2+5/6+11/12+19/20+...+9898/9900
1/2+5/6+11/12+19/20如何解
1/2-5/6+1/12-19/20+1/30-41/42
1/2-5/6+1/12-19/20+1/30-41/42
1/2+5/6+11/12+19/20+20/30怎么做,
1+1/2+5/6+11/12+19/20+……+9899/9900=?
1/2+5/6+1/12+19/20+29/30+.9701/9702+9899/9900=
1/2+5/6+1/12+19/20+29/30.9701/9702+9899/9900=
1/2+5/6+1/12+19/20+29/30+.9701/9702+9899/9900=
5+(1/2-5/6+1/12-19/20+1/30-41/42+1/56-71/72+1/90)
((-14/5)^4*(-10/7)^3*(-5/12)^2*(-3/20)^1)/|5/6-13/12+19/20-31/30|
找规律.2,3,5,8,12,_ 2/1,6/5,12/11,20/19,_,42/41
找规律填空:1/2、5/6、11/12、19/20、( )、41/42
1/2+5/6+11/12+19/20+29/30+41/42+55/56=怎麽做?
计算:1/2+5/6+11/12+19/20+……+89/90+109/110=
计算:1-3/2+5/6-7/12+……-19/20+21/110
找规律填数1/2,5/6,11/12,19/20,( ),41/42.
1/2+5/6+11/12+19/20+29/30+41/42=?=多少