作业帮1-1/2+1/3-1/4+1/5-1/6……+1/15=23*(1/A+1/B+1/C+1/D
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|E3}ں6yv S:
1-1/2+1/3-1/4+1/5-1/6……+1/15=23*(1/A+1/B+1/C+1/D
1-1/2+1/3-1/4+1/5-1/6……+1/15=23*(1/A+1/B+1/C+1/D
1-1/2+1/3-1/4+1/5-1/6……+1/15=23*(1/A+1/B+1/C+1/D
这题不全吧