当n趋向无穷时,1/(n^2+1)+2/(n^2+2)+.+n/(n^2+n)的极限是多少
n(1-2的n分之a次方) 当n趋向无穷 极限是多少
n趋向正无穷时,[(2n-1)!/(2n!)]的极限是多少?
计算数列极限,当N趋向于无穷时,根号下(N^2+4N+5)-(N-1)的极限
求n趋向无穷时 [(1+1/n)(1+2/n)...(1+n/n)]^1/n 的极限?
(n+2)^3/(n+1)^4的极限(当n趋向于无穷)
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 n趋向无穷 2^n+1 + 3^n+1/2^n+3^n
当n趋向无穷时,2的n次方除3的n次方的极限
lim(n趋于无穷)[n(n+1)/2]/n方+3n的极限是多少?
(2^n+4^n+6^n+8^n)^(1/n)当n趋于无穷时的极限
(n-1/n+3)的2n次方当n趋于无穷时的极限
当n趋向无穷时,1/n^3 + 2^2/n^3 + ...+ (n-1)^2/n^3 的极限怎么求