(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).........+(-1/99+1/100)
为什么得数等于-99/100
(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).........+(-1/99+1/100)
为什么得数等于-99/100
(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).........+(-1/99+1/100)
=(-1+1/2)+(-1/2+1/3)+(-1/3+1/4).........+(-1/99+1/100)
=-1+1/100
=99/100