lim(x→0)(1+3tan^2(x))^cot^2(x)=?

lim(x→0)(1+3tan^2(x))^cot^2(x)=? lim(x→0)tan(x)ln(1+x)=? lim x→0 (cot x)^tan 2x= lim(x→1) (1-x)tan(π/2)x 数学极限lim(x→0)((x^3)/(3*x^2-1)) lim(x→+无穷)(√x(x+2)-√(x^2-x+1)) lim(x→1)(tan(x-1))/(x^2-1) lim(x→0)[tan(2x+x^3)/sin(x-x^2)] 1.计算lim(1/x2-cot2x) X→0 2 lim(1-x)tanπx/2x→1 1.lim x→0,(tanx-sinx)/(sin2x)^3 2.lim x→0,sin(x-1)tan(x-1)/2(x-1)lnx .. lim(x→0) [1-cos(x^2)]/sin(x^2)tan(x^2)]=? lim x→-2 (tanπx)/(x+2) 2.lim x→0 cot2xcot[(π/2)-x] 3.lim x→π/3 (1-2cosx)/(π-3x) lim(1+3tan²x)^cot²x (x→0) 求lim(x->0)(1+3(tan^2)x)^((cot^2)x) lim(sin 2x)/(tan 2x)极限多少 x→0 .lim(sin 2x)/(tan 2x) x→0 为啥答案是2／3 我怎么算都是1。 x→1,求lim（tanπx/4）^tanπx/2求极限, lim x->0 (sin x-tan x)/sin (x^3) lim (1-e^tan x)/arc tan x/2X趋向于0怎么换到lim tan x /(x/2) lim(x→0)tan(2x^2)/1-cosx求解要过程 求极限lim趋向0 积分【X,0】 tan^2 tdt/ln(1+x^3)