lim(2^x-1)/(2+2^1/x）x趋于0

lim(1-x)^(2/x) x->0 lim(2x-3/2x+1）^x+1 lim 2（1+x）^1/x x→0 lim（x/（1+x^2））,x趋向无穷大 lim(arcsinx/x)(1/x^2)(x趋于0） lim(arcsinx/x)^(1/x^2)(x趋于0） lim~~~数学题lim（x趋近无穷）x+2+lnx/（x-1）=? 极限：lim(x->2)1/(x-2) lim(1-(5/x))^x-2 lim(x+e^2x)^(1/sinx) 1、lim(x->无穷大) e^x arctanx2、lim(x->0)sinx√1+sin(1/x)3、lim(x->无穷大)【（√x^2+x+1）-【(√x^2-x+1)】4、lim(x->无穷大)((x+{x+(x)^0.5]^0.5}^0.5)/(2x+1)^0.55、lim(x->0)(sin3x+x^2sin1/x)/((1+cosx)x)6、lim(n->无穷大)(2^n)(si lim(x^2+1/x^2-2x)^x=? lim(x->无穷大){(2^x-3^x)/2}^(1/x) Lim [x^2/(x^2-1)]^x (x→∞) Lim(x>1) x-1/x^2+x-2.计算 lim x→1 x-1/x^2-x lim x->正无穷大 x ( sqrt(x^2+1)-x ) lim(x->0)((2-x)/(3-x))^1/x