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大一求极限lim(n/(n2+1)+n/(n2+2^2)+……+n/(n2+n2))
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高数极限题:用极限定义,证明:lim n2+n+6/n2+5=1 n趋向于无穷.其中n2就是n的平方
求极限n~∞,lim(n+1)/2n
1.求lim[1/(n2+n+1)+2/(n2+n+2)+.+n/(n2+n+n)][n趋于无穷][n2为n的平方]
求 证Lim ( n/ n2+1) + (n/ n2+2) +( n/ n2+3).+(n/n2+n)当n趋向无穷时的极
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求lim【1/(n2+π)+1/(n2+2π)+...+1/(n2+nπ)】(n趋向于正无穷)