lim(x→∞) (xsin(3/x)+sinx /x)等于多少急!

lim xsin(2/x) x→∞ lim(x→∞) (xsin(1/x)+1/x(sinx)) lim x→∞ xsin(1/x)求极限 lim(x→∞) xsin(5/x)求极限 lim(x→∞) (xsin(3/x)+sinx /x)等于多少急! lim(x->∞)[ xsin(2/x)+(cosx^2)/(x^2)] lim(x→∞)[sinx/x+xsin(1/2x)]答案是1/2.求过程 求lim(n→0)[sin2x/x-xsin(2/x)] lim(x→0)xsin *1/x^2 x趋近于无穷 lim [xsin(1/3x) ]=? 求极限lim x→∞ Xsin[e^(1/x)-1]为什么等于1, 烦人的数学微积分1、lim(x→0)Sin3x/Sin2x2、lim(x→0)x/3*Sin3x3、lim(x→0)[Xsin(3/x)+(tanx/2x)]4、lim(x→3)Sin(x-3)/(X^2-X-6)5、lim(x→∞)[1+(1/2x)^x6、lim(x→∞)(x+3/x)^x7、lim(x→0)（1-x/2)^1/x+118、求下列函数的间断 lim(x趋向0)1-x^2-e^(-x^2)/xsin^3(2x) lim x→0 sinx/(x^2+3x)2.当x→0,下列变量中（）与x为等价无穷小.A.sin^2x B.In(1+2x) C.xsin(1/x) D.根号（1+x)-根号(1-x) 3.lim x→∞ sin(1/x)=?4.lim x→∞(x-根号(x^2-1)=? 为什么lim(x→0) [1-x^2-e^(-x^2)]/[xsin^3(2x)] =lim(为什么lim(x→0) [1-x^2-e^(-x^2)]/[xsin^3(2x)] =lim(x→0) [1-x^2-e^(-x^2)]/(8x^4) 大一高数 lim xsin[ln(1+3/x)]（x趋向无穷大）=?大一高数lim xsin[ln(1+3/x)]（x趋向无穷大）=? lim x→∞ XSIN 1/X= 应选a.0 b.1 c.2 d.∞ 求极限lim(x→0){(2x-sin2x)/xsin^2x}