求极限 lim x-无穷 sin(n+1)/(n+a) 正无穷

求极限 lim x-无穷 sin(n+1)/(n+a) 正无穷 极限 lim(x-->无穷)(1/n sin(n)+1/n sin(1/n)+nsin(1/n))求极限lim(x-->无穷)(1/n sin(n)+1/n sin(1/n)+nsin(1/n)) 求lim(x->&无穷)sinn/n,求lim(x->无穷)sin(1/n) 请问怎样求极限lim(x→无穷)n·sin(x/n)? 求极限lim(1/n)*[(sin(pi/n)+sin(2pi/n)+.+sin(n*pi/n)] n->无穷 求极限：lim((2n∧2-3n+1)/n+1)×sin n趋于无穷 求极限lim(n→无穷) (三次根号下n^2)*sin /(n+1) 求极限 lim(x趋向无穷)[(x+1)^(x+1)/x^x]sin(1/x) 求极限：lim(x→无穷)(2^n-7^n)/(2^n+7^n-1)=? lim n趋于无穷2的n次方sin(x/2的n次方)的极限怎么求 求极限 lim(x→1) (1-x^n)/(1-x) (n→无穷) lim n→无穷(sinx-sina/sin(x-a)) a≠0 求极限 急打错了，应该是x→a 求lim(n趋近于正无穷)（sin根号（x+1）-sin根号(x)） 求极限 n*sin(x/n) n趋向无穷 用等价无穷小量代换求极限 lim (x趋于0) sin x^n/(sin x)^m (m,n为正整数)lim (x趋于0) sin x^n/(sin x)^m (m,n为正整数) 求函数极限,x趋于正无穷时,lim[sin(x+1)^(1/2)-sin(x-1)^(1/2)] 求极限 lim（ √N^2+N ）－N X趋向于无穷 求极限 求极限Lim x^2n的极限 （n趋向无穷）?n要分正无穷和负无穷讨论吗?