求[4-2^(n+1)]/[2^n+2^(n+2)]的极限 就是lim[4-2^(n+1)]/[2^n+2^(n+2)]

求极限 lim(n->无穷)[(3n^2-2)/(3n^2+4)]^[n(n+1)] lim（n→∞) （(2n!/n!*n)^1/n的极限用定积分求 求极限n~∞,lim(n+1)/2n 求极限,lim(1+n)(1+n^2)(1+n^4)-----(1+n^2n)=?（n趋于无穷） 一道极限题,lim[n^2(2n+1)]/(n^3+n+4)n->∞ 求极限 lim(n→∞)[根号(n^2+4n+5)-(n-1)] = 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, 求极限lim [ 2^(n+1)+3^(n+1)]/2^n+3^n (n→∞) lim n →∞ (1^n+3^n+2^n)^1/n,求数列极限 求极限lim(x→∞)（1/n+2/n+3/n..+n/n） 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 lim(n趋于无穷)[n(n+1)/2]/n方+3n的极限是多少?