那题就是
2014(1-1/2)(1-1/3)(1-1/4)...(1-1/2014)
=2014(1/2)(2/3)(3/4)...(2013/2014)
=2014(1/2014)
=1
0
那题就是
2014(1-1/2)(1-1/3)(1-1/4)...(1-1/2014)
=2014(1/2)(2/3)(3/4)...(2013/2014)
=2014(1/2014)
=1