求lim ln n/n n→无穷

求lim(n→+∞ ) (1+n)[ln(1+n)-ln n] 高数 lim n趋向无穷 lim（3^(1/n)-1)ln(2+2^n) 求极限 lim(n→∞) (ln(1+1/n)/(n+1)+ln(1+2/n)/(n+2)+...+ln(1+n/n)/ 求lim（n驱近于无穷）〔ln(1+1/n)〕/〔sin2/n〕的极限. 求lim(n→无穷)(根号（n+1）-根号n)*根号n 的极限 求极限：lim(x→无穷)(2^n-7^n)/(2^n+7^n-1)=? 求极限lim{n[ln(n+1)-lnn] n→∞ 求极限lim(n→无穷) (三次根号下n^2)*sin /(n+1) 求下列极限 lim{n[ln(n+2)-lnn]}趋向于无穷 lim ln(1+2x)/sin3x趋向于0 lim{n[ln(n+2)--ln2]}的极限怎么求? 求极限 lim(n->无穷)[(3n^2-2)/(3n^2+4)]^[n(n+1)] 求极限 lim x-无穷 sin(n+1)/(n+a)