lim x→-2 (tanπx)/(x+2) 2.lim x→0 cot2xcot[(π/2)-x] 3.lim x→π/3 (1-2cosx)/(π-3x)

lim(x→1) (1-x)tan(π/2)x lim(2-x)tanπ/4x x→1,求lim（tanπx/4）^tanπx/2求极限, lim x→0 (cot x)^tan 2x= lim(2-x)^tanπx/2 x趋近1 1.计算lim(1/x2-cot2x) X→0 2 lim(1-x)tanπx/2x→1 lim (x→0) [tan( π/4 - x )]^(cotx)=? (1-x)tan(πx/2),lim 趋向于1, 求x→1时lim（2-x）^tan（πx）/2的极限 lim（x→1）（1-x^2）tanπx/2 求lim (x→2)(x-2)tanπx/4的值 lim(x→1)(x-1)tanπx/2=?请不要用洛必达法则. 求lim(1-x)tanπx/2 x→1 lim(x→0)[tan(2x+x^3)/sin(x-x^2)] lim(x→0)tan(x)ln(1+x)=? lim[(sin x)^tan x],x趋向于Pai/2 lim(x→0) [1-cos(x^2)]/sin(x^2)tan(x^2)]=? 求极限：lim(1-x)tan Π/2