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%1/4+(%5/6)+2/3%(+1/2)%4又1/4

合并同类项 -3.76-2又3/7-7.24-3又4/7=-(3.76+7.24)-(2又3/7+

print 3+2+1-5+4%2-1/4+6 在python2中的计算结果是7 在python

=<6+(1-1/3)+(1-1/4)+(1-1/5)>/<15+(1-2/3)+

设(1-1/2-1/3-1/4-1/5)为a,(1/2+1/3+1/4+1/5)为b,代入得转化为a

你做得对 也可以不拆开 1/1*2*3+1/2*3*4+1/3*4*5+1/4*5*6+1/

1/4+(-2/3)+5/6+(-1/4)+(-1/3) =(1/4-1/4)-(2/3+1/3)

1/3N(N+1)(N+1+1)=1/3*(N*N*N+3N*N+2N)

(1/2+1/3+1/4+…+1/25)+(2/3+2/4+2/5+…2/25)+…+(23/24+

2004能被2,3,4,6,12整除,所以可以不考虑1/2,1/3,1/4,1/6,1/12

1/2×1/3+1/3×1/4+1/4×1/5+1/5×1/6+…+1/99×1/100 = 49/

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