求lim(x→0) [√(1+x^2)-1/(1-cosx)]

求Lim(x→0)(sinx/x)^(cosx/1-cosx) 求极限lim(x→0)x²/1-cosx 求极限 x 趋于0 lim(cosx)^1/(x^2) 求lim(1-cosx)/x^2 已知lim(x→0) f(x)/(1-cosx) =2 求lim(x→0) [1+f(x)]^½ 求lim(x→0) (√1-cosx^2)/(1-cosx),还有题lim(x→0) (x-xcosx)/(tanx-s 求极限x→0 lim(√2-√1+cosx)/sin^2x 求极限!lim（x→0）（√(1+xsinx)-cosx）÷x^2 lim(x→0)(cosx)^(1/ln(1+x^2)) lim(x→0)(ln(1+x^2)/(sec-cosx)) 数学求极限lim x→0 ( x3/1-cosx) 求详细解：lim(x→0+) (1-cosx)^sinx