更新时间2018-10-02 07:21:54
√2016-√2015=(√2016-√2015)*(√2016+√2015)/(√2016+√2015)
=(2016-2015)/(√2016+√2015)
=1/(√2016+√2015)
√2015-√2014=(√2015-√2014)*(√2015+√2014)/(√2015+√2014)
=(2015-2014)/(√2015+√2014)
=1/(√2015+√2014)
因为:√2016>√2014
所以:√2016+√2015>√2015+√2014
所以: 1/(√2016+√2015)<1/(√2015+√2014)
所以:√2016-√2015<√2015-√2014
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