为什么lim n趋向无穷 (5n^2-4n)/(3n^2+2n-1)等于5/3

为什么lim n趋向无穷 (5n^2-4n)/(3n^2+2n-1)等于5/3 lim(2^n+3^n)^1 (n趋向无穷) 求解lim((3^1/n+4^1/n)/2)^n n趋向正无穷. 当n趋向于正无穷,求lim{{(根号（4n^2+n）)+n}/(n+2)} 求极限 1.lim(sinn-3n)/(5n+cosn) n趋向无穷求极限 1.lim(sinn-3n)/(5n+cosn) n趋向无穷 2.lim【（1+r)*(1+r^2)*(1+r^4)…(1+r^(2^n))】 n趋向无穷 r绝对值小于1 3.limXn n趋向无穷,其中X1>0,Xn+1=(2+3Xn)/1+Xn,n=1,2,3… 大写的X 高数 lim n趋向无穷 lim（3^(1/n)-1)ln(2+2^n) lim(n/(n^2+1)+...+n/(n^2+n))x趋向于无穷 求解答过程~ 极限运算：lim{[2^(2n+1)-8]/[4^(n+1)+3^n]}当n趋向正无穷, 求极限 lim (1+2+3+...+n/n+2-n/2)趋向是正无穷lim (1+2+3+...+n/(n+2)-n/2)趋向是正无穷 lim(n趋向无穷){[(n^2+1)^(1/2)]/(n+1)}^n怎么解. lim x趋向于无穷 (2^n+1+3^n+1)/(2^n+3^n)= 求lim趋向于无穷3^n+(-2)^n/3^(n+1)+(-2)^(n+1) lim(x趋向于无穷)2^n-3^n/2^n+3^n lim[(根号下n^2+n)-n],n趋向于无穷,求函数的极限 求极限 lim(n+1/n+2)^n.n趋向无穷 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) 求极限:Lim(1+1/n-1/n^2)^n n趋向于正无穷