用夹逼准则求lim(1/n^2+1/(n^2+1)+...+1/(2n)^2),n趋向于无穷大
求极限 lim n[1/(n^2+1)+1/(n^2+2^2)+……+1/(n^n+n^n)] (n趋向于无穷大,n^n
n趋向于无穷大,lim n[ln(n+2)-ln(n+1)],
紧急:求 lim n*sin(π(n^2+2)^0.5)*(-1)^n,n趋向无穷大;
lim[n/(n*n+1*1)+n/(n*n+2*2)+...+n/(n*n+n*n)],当x趋向无穷大时,怎么求极限,
极限计算 lim (1+2+3+...+n)/n^2=?(n趋向于无穷大)
证明lim(n/(n^2+1))=0(n趋向于无穷大)
证明 lim(1-1/2^n)=1 n趋向于无穷大
求极限:Lim(1+1/n-1/n^2)^n n趋向于正无穷
求极限 n趋向于无穷 lim((根号下n^2+1)/(n+1))^n
求极限lim(n趋向于无穷)(n+1)(根号下(n^2+1)-n)
lim[(n+3)/(n+1))]^(n-2) 【n无穷大】
求下列极限.lim(n趋向于无穷大)(2x次方)*(sin*1/2x次方)