lim(x→0)(1/cosx)=?

lim(x→0)(1/cosx)=? lim(x→0)(e^x-cosx)/x=1? 求Lim(x→0)(sinx/x)^(cosx/1-cosx) lim(x→0)(1-cosx)/(xsinx)=? 求lim(1-cosx)/x^2求lim(1-COSX)/X^2X→0 lim（x→0） 1-cosx/x＋x lim(x->0)(ln(1+x)-x)/(cosx-1)=? 已知lim(x→0) f(x)/(1-cosx) =2 求lim(x→0) [1+f(x)]^½ lim(x→0)(cosx)^(1/ln(1+x^2)) lim((x→0) (sinx/x)^1/(1-cosx) 求极限lim(x→0)x²/1-cosx 求极限lim(x→0)(cosx-(1/x)) Lim,x-0,(1/sinx)*(1/x-cosx/sinx)=? lim x->0 cos(2x)-1 / cosx -1 = lim(x—0) (1-cosx)/x x趋于0 lim sinx-tanx/x^3=lim sinx/x×(cosx-1)/(x^2×cosx)是怎么通分的?x趋于0 lim sinx-tanx/x^3=lim sinx/x×(cosx-1)/(x^2×cosx)thank you lim {[(1+2x)^1/2(1-cosx)]/x^3}=?x→0 limx→0(cosx)^(1/x^2)求解lim(x→0)((cosx)^(1/x^2))