lim(x-1)cosx/(x^2+1)=?
lim x->pi (x^2-1)/cosx
lim(x→0)(1/cosx)=?
求lim(1-cosx)/x^2
已知lim(x→0) f(x)/(1-cosx) =2 求lim(x→0) [1+f(x)]^½
Lim,x-0,(1/sinx)*(1/x-cosx/sinx)=?
lim(x→0)(cosx)^(1/ln(1+x^2))
求极限 x 趋于0 lim(cosx)^1/(x^2)
lim(x→0)(ln(1+x^2)/(sec-cosx))
lim[ln(1+x^2)]/(secx-cosx) x->0
lim(x趋向于0)(1-cosx)/x^2
求Lim(x→0)(sinx/x)^(cosx/1-cosx)
lim(x->0)[cosx-1+1/2 *(x^2)]/x^n=a 求 n ,a