求1*32*43*5……n(n2)之和
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求极限lim(n/(n2+1)+n/(n2+2^2)+……+n/(n2+n2))求极限lim(n/(n2+1)+n/(n2+2^2)+……+n/(n2+n2))求极限lim(n/(n2+1)+n/(n
已知下列n2个自然数之和为36100,求n.1,2,3,…n,2,4,6…2nn,2n,3n…n2已知下列n2个自然数之和为36100,求n.1,2,3,…n,2,4,6…2nn,2n,3n…n2已知
大一求极限lim(n/(n2+1)+n/(n2+2^2)+……+n/(n2+n2))pi/4大一求极限lim(n/(n2+1)+n/(n2+2^2)+……+n/(n2+n2))pi/4大一求极限lim
如何求当n→a时,1/n2+n+1+2/n2+n+2+……+n/n2+n+n的极限?注:n2=n的平方先看极限里面的,不妨设那一串为F(n)因为(n2=n的平方):1+2+……+n/n2+n+n(为方
求极限:当n→无穷,1/(n2+n+1)+2/(n2+n+2)+……+n/(n2+n+n)等于?注:n2=n的平方求极限:当n→无穷,1/(n2+n+1)+2/(n2+n+2)+……+n/(n2+n+
求证Lim(n/n2+1)+(n/n2+2)+(n/n2+3).+(n/n2+n)当n趋向无穷时的极限为1求证Lim(n/n2+1)+(n/n2+2)+(n/n2+3).+(n/n2+n)当n趋向无穷
求极限lim((n+1)/(n2+1)+(n+2)/(n2+2)+...+(n+n)/(n2+n)),n趋近无穷求极限lim((n+1)/(n2+1)+(n+2)/(n2+2)+...+(n+n)/(
证明:12+22+32+……+n2=1/6n(n+1)(2n+1)证明:12+22+32+……+n2=1/6n(n+1)(2n+1)证明:12+22+32+……+n2=1/6n(n+1)(2n+1)1
请问如何证明lim(n→∞)[n/(n2+n)+n/(n2+2n)+…+n/(n2+nn)]=1,以及请问如何证明lim(n→∞)[1/√(n2+1)+1/√(n2+2)…+1/√(n2+n)]=1利
求limn→∞n2[(1/n2+1)2+2/(n2+2)2...+n/(n2+n)2]第七题...好心的话帮忙把第6题也解了吧(lim后面是Xn).被高数虐啊TT求limn→∞n2[(1/n2+1)2
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]2.求当x趋于0时,lim(tanx-sinx)/(sinx)3[sinx的三次方]
已知12+22+32+….n2=(1/6)n(n+1)(2n+1),试求22+42+62….+502的值(写过程)已知12+22+32+….n2=(1/6)n(n+1)(2n+1),试求22+42+6
已知:12+22+32+…+n2=1/6n(n+1)(2n+1),试求22+42+62+…+1002已知:12+22+32+…+n2=1/6n(n+1)(2n+1),试求22+42+62+…+1002
求数列5,55,555,…前n项之和求数列5,55,555,…前n项之和求数列5,55,555,…前n项之和因为an=(5/9)×((10^n)-1))所以sn=(5/9)×((10^1)-1))+(
求n阶方阵的所有元素之和n阶方阵是这样的括号不写了12.n23...n+1...........nn+1.n+2求n阶方阵的所有元素之和n阶方阵是这样的括号不写了12.n23...n+1.......
N是1990位数,并且是9的倍数.N的各位数字之和为N2,N2的各位数之和为N3,求N3N是1990位数,并且是9的倍数.N的各位数字之和为N2,N2的各位数之和为N3,求N3N是1990位数,并且是
求n+32/n2的最小值求n+32/n2的最小值求n+32/n2的最小值
求(n2+8)/(n+1)的最小值,求(n2+8)/(n+1)的最小值,求(n2+8)/(n+1)的最小值,求导
高中数学提问题1.已知1+2+3+……+n/1+3+5+……+(2n-1)=10/19,求n2.已知数列{an}是等差数列,它的前n项和为Sn,a1+a2+a3=4,a3+a4+a5=10,求Sn请写
(5n2+3n+1)/n3+n2+5的极限(5n2+3n+1)/n3+n2+5的极限(5n2+3n+1)/n3+n2+5的极限lim(5n2+3n+1)/n3+n2+5(n趋向无穷大)=lim(5n^