lim(x→0)[ln(1+x^2)]/[sin(1+x^2)]

lim(x趋向0)ln(1+sin x)/x^2 求极限：lim x→0 ln[1+sin^2(x)]/[e^(x^2)－1] lim(x→0)ln(1-2x)/x 求极限lim(x趋向于0)ln(1+x^2)/sin(1+x^2) 求极限ln(1+2x)/sin(1+2x),lim x->0 lim(x→0)(cosx)^(1/ln(1+x^2)) lim(x→0)ln（x^2+1）等于 lim(x→0)(ln(1+x^2)/(sec-cosx)) lim(x->0)ln(1+2x)/e^x-1 lim(x趋于0)[ln(1+2x)]/x lim{[sinx+(x^2)*sin(1/x)]/[(1+cosx)ln(1+x)]}(x趋近于0） 当 x->0 ,且 x>0 时,求极限：lim ln(2*cos(x)+sin(1/x)) .