(x->0) lim(2x^2-sinx)/x=?

lim(x->0)x/(sinx)^2=? lim x趋向0 x^2-sinx/x+sinx lim(x趋向0)((sinx/x)+1)=2? 求极限 lim x-0 sinx/2x =? 求极限 lim/x-0 (e^x+sinx+x^2) lim(x→0)(1-x^2-e^-x)/sinx 求lim(x→0)[(x^2sin1/x)/sinx] lim(x+e^2x)^(1/sinx) 求极限 （（sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1 求lim sinx^2/(sinx)^2 x趋向0 lim(x趋近0) (sinx-tanx)\[(2+x)^2\4][(2+sinx)^1\2 -1]=? 1.lim x->0 1/x^2 - 1/(sinx)^2