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数学
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2011分之1+2011分之2+2011分之3+…+2014分之2013等于?
人气:383 ℃ 时间:2019-11-17 21:45:24
解答
=(1+2+3+……+2014)/2011
=(1+2014)×2014÷2÷2011
=2029105/2011
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2013乘2014分之2011等于多少?
计算1/2011+2/2011+3/2011+...+2013/2014
利用因式分解计算:2013^3-2*2013^2+2011分之2013^3+2*2013^2-2014
1+(-2)+3+(-4)+.+2011+(-2012)+2013+(-2014)
若a=-2013分之2014,b=-2012分之2013,c=-2011分之2012
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