lim(x-0) (2^x - 1)/ x

lim(x->0)((2-x)/(3-x))^1/x 几道求极限的高数题,lim1/x(tanπx/(2x+1)) x→∞lim x(x^x-1)x→0+lim(x^x^x- lim(x->0)ln(1+2x)/e^x-1 lim[(1-e^(-x))^1/2]/x x趋于0 lim(x→0)ln(1-2x)/x lim(x趋向0)ln(1+sin x)/x^2 lim(x→0)(1-x^2-e^-x)/sinx 极限lim(x→0)(1-2/x)^x lim(arcsinx/x)(1/x^2)(x趋于0） lim(x趋于0)[ln(1+2x)]/x 求极限lim(x-->0)x^2 sin(1/x), 求lim(x→0)x cos 1/x lim(x→∞)x^2/ (3x-1)的极限