夹逼证lim(x→0)x^x=1

lim(x→0)(sin5x)/x=? 已知f(x)=ln(1+x) 求lim(x→0) f(x)/x lim(x→0)(1/cosx)=? 求极限 （（sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1 lim (x→0)x-sinx/x 证明：极限lim(x→0)(sinx/x)=1 . lim(x→0)x/(xsinx)=0和lim(x→0)(xsinx)/x=1 几道求极限的高数题,lim1/x(tanπx/(2x+1)) x→∞lim x(x^x-1)x→0+lim(x^x^x- 已知lim(x→0) f(x)/(1-cosx) =2 求lim(x→0) [1+f(x)]^½ lim(x→0)sinx/x=1 lim(x→0)x/sinx=1那是不是当x→0时,sinx~x tanx~x arc 求极限lim(x→0)sinxsin(1/x);lim(x→∞)(arctanx/x) lim(x→∞)[(a x^2)/x+1]+bx=lim(x→∞)(a x^2)+bx(x+1) / x+1=lim(x