1-1/3+1/6-1/6+1/12-1/12+1/24-1/24+1/48
=1-1/3+1/48
=2/3+1/48
=11/16
=1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+1/7/8
=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8
=1-1/8
=7/8
两道计算题(要有过程)
两道计算题(要有过程)
1、1/3-1/6-1/12-1/24-……-1/768
2、1/2+1/6+1/12+1/30+1/42+1/56
1、1/3-1/6-1/12-1/24-……-1/768
2、1/2+1/6+1/12+1/30+1/42+1/56
数学人气:193 ℃时间:2020-06-24 17:20:33
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