求极限：lim(n→∞) 3n^2+2n+1/-3n^2+2n

求极限lim [ 2^(n+1)+3^(n+1)]/2^n+3^n (n→∞) 求极限lim(x→∞)（1/n+2/n+3/n..+n/n） lim n →∞ (1^n+3^n+2^n)^1/n,求数列极限 求极限lim(n→∞)(3n^2-n+1)/(2+n^2)? 求极限lim(-2)^n+3^n/(-2)^[n+1]+3^[n+1] (x→∞) 求极限lim(n→∞)(1/n²+2/n²+...+n/n²) lim(n→∞) 1/(n+1)-2/(n+1)+3/(n+1)-4/(n+1)+...+[(2n-1)/(n+1)]-[(2n)/(n-1)]求极限 求极限n~∞,lim(n+1)/2n 求极限：lim(n→∞) 3n^2+2n+1/-3n^2+2n 求极限lim n→∞(1/(n+1)+1/(n+2)+.+1/(n+n) 求极限(1/(n+1)+1/(n+2)+.+1/(n+n) 求极限lim[n→∞](n^2+1)/(2n^2+3) 求极限 x→∞lim(3^n+1)/(3^(n+1)+2^n)= 求极限lim(n→+∞)3次方√n的平方/n的平方+2 lim（1/n+2^1/n）^n n→∞求详解!高数极限 极限 lim(n→∞)[(n!)^2/(2n)!]= 求函数的极限：lim(1^n+2^n+3^n+4^n)^1/n,当n→∞时的极限.(不用夹逼准则解) 求函数的极限：lim(1^n+2^n+3^n+4^n)^1/n,当n→∞时的极限.(不用夹逼准则解) 跪求函数的极限：lim(1^n+2^n+3^n+4^n)^1/n,当n→∞时的极限.(不用夹逼准则解)