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(-1+1/100)x(-1+1/101)x(-1+1/102)x...x (-1+1/2011)+(-1+1/2012)+(-1+1/2013)
会的赶快答一下啊 写不完完蛋了
人气:299 ℃ 时间:2019-09-24 05:25:30
解答
=(-99/100)×(-100/101)×(-101/102)×……×(-2011/2012)×(-2012/2013)
=99/2013
=3/61
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