2/1+6/1+12/1+...90/1+110/1+132/1的值是多少?
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2/1+6/1+12/1+...90/1+110/1+132/1的值是多少?2/1+6/1+12/1+...90/1+110/1+132/1的值是多少?2/1+6/1+12/1+...90/1+110
2/1+6/1+12/1+...90/1+110/1+132/1的值是多少?
2/1+6/1+12/1+...90/1+110/1+132/1的值是多少?
2/1+6/1+12/1+...90/1+110/1+132/1的值是多少?
1/2+1/6+1/12+.+1/90+1/110+1/132
=(1-1/2)+(1/2-1/3)+(1/3-1/4)+.+(1/9-1/10)+(1/10-1/11)+(1/11-1/12)
=1-1/12
=11/12
是不是1/2+1/6+...1/132;
是的话，原式=(1-1/2)+(1/2-1/3)...+(1/11-1/12)
=1-1/12
=11/12
12/11
1/2+1/6+1/12+1/20+.1/90
计算1/2+1/6+1/12+1/20.1/90
计算:1/2+1/6+1/12+.+1/90
1+ 1/2+1/6+1/+1/12+1/20+.+1/90
1—1／2+1／6+1／12+1／20+.+1／72+1／90
1-1/2+1/6+1/12+1/20+...+1/72+1/90
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1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110
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2/1+6/1+12/1+...90/1+110/1+132/1的值是多少?