lim(n趋向于无穷)(x-a)sin(1/a-x)

lim(n趋向于无穷)(x-a)sin(1/a-x) lim x趋向于无穷 2^n sin(x/2^n) lim(x趋向无穷)(sin n)/n=? 求lim(n趋向于正无穷)(x^n)/n! lim n趋向于无穷 2^n sin(x/2^n)X为不等于0的常数 lim根号n*（(a的n分之一次方）-1）,x趋向于无穷, 判断极限是否存在lim [n+(-1)^n]/n n趋向于无穷 lim |x|/x x趋向于0 1.求（sin x - sin a）/ (x-a) 的极限,x 趋向于 a2.求 (2^n) sin x/(2^n) 的极限,x 趋向于 无穷 lim(100sin(n!))/(2n-1)n趋向于+无穷.大一高数题. lim n 趋向于正无穷的时候sin（派/n）是多少 求lim (sin^2x+x)/(cos^2x-x) x趋向于无穷 求极限lim(x趋向于正无穷)x^n/e^ax(a>0,n为正整数) lim(n趋向无穷)nπ*sin(nπ) lim(n/(n^2+1)+...+n/(n^2+n))x趋向于无穷 求解答过程~ x趋向于无穷时 lim (3x-1)/(x^3 乘以 sin(1/x^2 )) 几个基本极限,同时求证明lim(x趋向于正无穷)[(a^n)/(n!)]=?lim(x趋向于正无穷)[n次根号n]=?a是任意实数 lim（x趋向于无穷）(sin(1／x))/(1/x)等于多少? lim x趋向于无穷 x乘sin(x分之1)等于?