lim趋向于0(2x-1/1+2x)^x求极限我又会了~木事了

lim(1-2x)^1/x x趋向于0 lim(x趋向于0)(x*cotx-1)/(x^2) f(x)={x x=1}求lim x趋向于1- f(x) lim x趋向于1+ f(x) lim趋向于1 f(x)f(x)={2x-1 x0} 求lim x趋向于0- f(x) lim x趋向于0+ f(x) lim趋向于0 f(x) lim（x趋向于0）（1-cosx)/x^2 求lim x趋向于0(arctanx)/(x^2+1) lim(1+3x)^(2/x)x趋向于零 lim(1-2x)^(1/x)=?lim下面是X趋向于0 lim(1+2tanx)^cotx (x趋向于0) lim((1+x)^5-(1+5x))/(x^2+x^5) x趋向于0 lim (1+x)^5+(1+5x)/(x^2+x^5) x趋向于0 (1-x)tan(πx/2),lim 趋向于1, lim x趋向于0 (√(1+x)-√(1+x^2))/(√(1+x)-1) lim x趋向于0求((a^x+b^x)/2)^(1/x) 当x趋向于0时,lim(x-1/x)^2x的极限值(求过程) lim ln(1+2x)/e^x x趋向于0 e^x lim(1/（x^2-x)）*sin(π/x）x趋向于0请详解 lim(x+2^x)^(1/x) x趋向于0这道题怎么做 lim(1+e^1/x)^x,x趋向于+0