11211311991199原式=(3/2)*(1/2)*(4/3)*(2/3)*……*(100/99)*(98/99)=50/99(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*……*(1-1/99)*(1+1/99)=(1/2)*(3/2)*(2/3)*(4/3)*(3/4)*…
11211311991199原式=(3/2)*(1/2)*(4/3)*(2/3)*……*(100/99)*(98/99)=50/99(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*……*(1-1/99)*(1+1/99)=(1/2)*(3/2)*(2/3)*(4/3)*(3/4)*…
11211311991199原式=(3/2)*(1/2)*(4/3)*(2/3)*……*(100/99)*(98/99)=50/99(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*……*(1-1/99)*(1+1/99)=(1/2)*(3/2)*(2/3)*(4/3)*(3/4)*…
11211311991199原式=(3/2)*(1/2)*(4/3)*(2/3)*……*(100/99)*(98/99)=50/99(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*……*(1-1/99)*(1+1/99)=(1/2)*(3/2)*(2/3)*(4/3)*(3/4)*…
11211311991199原式=(3/2)*(1/2)*(4/3)*(2/3)*……*(100/99)*(98/99)=50/99(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*……*(1-1/99)*(1+1/99)=(1/2)*(3/2)*(2/3)*(4/3)*(3/4)*…
11211311991199原式=(3/2)*(1/2)*(4/3)*(2/3)*……*(100/99)*(98/99)=50/99(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*……*(1-1/99)*(1+1/99)=(1/2)*(3/2)*(2/3)*(4/3)*(3/4)*…
11211311991199原式=(3/2)*(1/2)*(4/3)*(2/3)*……*(100/99)*(98/99)=50/99(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*……*(1-1/99)*(1+1/99)=(1/2)*(3/2)*(2/3)*(4/3)*(3/4)*…
11211311991199原式=(3/2)*(1/2)*(4/3)*(2/3)*……*(100/99)*(98/99)=50/99(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*……*(1-1/99)*(1+1/99)=(1/2)*(3/2)*(2/3)*(4/3)*(3/4)*…