lim (sin(x+△x)-sin x)/△x x趋于0

lim(x(sin)^2) lim x->0 (sin x-tan x)/sin (x^3) lim (sin(x+△x)-sin x)/△x x趋于0 lim (x->0) [tan(tan x)-sin(sin x)]/(tan x -sin x) lim（x ->0）sin x /x ^3+3x lim(x→0)×(x-sin²3x)/x lim (x->0) sin(3x)+4x/xsec(x) lim x趋于0 （x-sin x）/x^3 lim (x^x-sin(x)^x)/(sin(x)sin(x)ln(1+tan(x))) x趋于零 lim sin(x2-1)/x-1 lim→0 sin^3/x^3 求极限 lim sin(x^2 * sin (1/x))/x x->0求极限 lim sin(x^2 * sin (1/x))/x x->0 lim(x->0)sin[sin(sinx)]/tanx=? lim [sin(x+Δx)-sinΔx]/Δx(Δx趋近0) lim(x趋于0)(x^2-sin^2xcos^2x)/((x^2)sin^2x) lim[(x+sin x/)/(x+sin 5x)],x无限趋近于0.烦请写出步骤. 求极限,lim x趋于0 x * sin 1/x lim:x平方-1/sin(x-1),x趋于1