(-1+1/100)x(-1+1/101)x(-1+1/102)x... x (-1+1/2011)+(-1+1/2012)+(-1+1/2013)
(-1+1/100)x(-1+1/101)x(-1+1/102)x... x (-1+1/2011)+(-1+1/2012)+(-1+1/2013)
日期：2013-09-21 23:04:29 人气：1
=(-99/100)×(-100/101)×(-101/102)×……×(-2011/2012)×(-2012/2013)
=99/2013
=3/61