1.lim x->0 1/x^2 - 1/(sinx)^2

1.lim x->0 1/x^2 - 1/(sinx)^2 lim(x+e^2x)^(1/sinx) lim(x→0)(1-x^2-e^-x)/sinx lim(x→0)(1+sinx)^(1/2x) 怎么计算lim(x->0+)x^(1/2)*ln(sinx)? lim(1-2^x)^sinx x趋向于－0 lim(x趋向0)((sinx/x)+1)=2? lim (e^x-sinx-1)/(arcsinx^2) 1.lim(x趋向0时)[x^2(1-cosX)]/[(1+e^X)(sinX)^3] lim(x→∞)[sinx/x+xsin(1/2x)] lim(x->0)x/(sinx)^2=? 求下列极限：1)lim√(x)lnx (x->0+); 2)lim(sinx/x)^1/x (x->0+)