lim(x趋近于0)[sin6x+xf(x)]/x^3=0,则lim(x趋近于0)[6+f(x)]/x^2=?rt

lim(x趋近于0)[sin6x+xf(x)]/x^3=0,则lim(x趋近于0)[6+f(x)]/x^2=?rt lim sin2x/x x趋近于0 lim(n趋近于0)(arctanx)/x lim（x/sinx）x(趋近于0)为什么等于lim(cosx)x(趋近于0) x趋于0,lim x-o ( sin6x+xf(x))/x3=0 ,lim x-o (6+f(x))/x2=? lim(x趋近于0+)(x^x)^x= x趋近于0 lim(x+e^x)^1/x lim x趋近于1 x^2趋近于1 lim(x-sinx)/(x+sinx),x趋近于0 lim x趋近于0 1-根号1-x/x lim(x-sinx)/(x+sinx),x趋近于0 lim(sinx+e^x)^(1/x) x趋近于0 lim (arctan X)/x,x趋近于0,怎么解? lim ln(1+x)^ 1/x x趋近于0 当x趋近于0 lim(1-x)^(1/x) lim x趋近于0 ((1+2^x)/)^(1/x) lim (e^(1/x))/x (x趋近于0-) 求lim【(x-tanx)/x^3】X趋近于0