炉石传说地下世界新卡:-1/10-1/11-1/11-1/12-…-1/19-1/20
来源:百度文库 编辑:高校问答 时间:2024/05/13 09:01:41
怎么样抵消
什么问题啊
写得不清楚
-1/10-1/11-1/11-1/12-…-1/19-1/20
化简:1/2!+2/3!+......+10/11!+1/11!
1/1*2+1/2*3+1/3*4+......+1/10*11=???
1/x(x-1)+1/x(x+1)+1/(x+1)(x+20........+1/(x+9)(x+10)=11/12
1/11+1/12+1/13+1/14+1/15
1+1/1+2+1/1+2+3+......+1/1+2+3+......+10
一:1/8=1/( )+1/( )二:1/10=1/( )+1/( )三:1/12=1/( )+1/( )+1/( )
1/6+1/8+1/10+1/12+..........+1/202=?
齐齐算 1/(10/1+12/1)
1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10+1/11+1/12+1/13……(一直按规律加到)1/2000