求lim x趋向0时,x+sinx和x^2+x的极限请问下,可否直接把0带进去?参考资料上有limx→0,x^2+x /x =limx→0 x+limx→0 1=1,为什么不能把0带进去得出极限为0呢?

求lim sinx^2/(sinx)^2 x趋向0 求lim x趋向于0(x-sinx)/tanx^3 求极限：lim(x趋向于0)(sinx-tanx)/x=?它和lim(sinx+tanx)/x有区别吗? 求极限(x趋向于0时）lim[sinx-sin(sinx)]/(sinx)^3 lim x趋向0 x^2-sinx/x+sinx 求lim(x趋向0)(1+sinx)^cotx的极限 lim ln(e^sinx) x趋向0 lim x／（x+sinx）x趋向无穷大 怎么求 求x趋向0时lim(tanx-sinx)/sinx的极限 求x趋向于0时lim(sinx+cosx)^x的极限 求lim (e^x-e^sinx)/(x-sinx）时（x趋向于0）,lim (e^x-e^sinx)/(x-sinx）时（x趋向于0）,我算出来是无穷大,正确答案是什么? 1.x趋向0 lim (cosx-1)/x 2.x趋向0 lim sinx/x lim(x趋向0)(x^3)/(x-sinx) 求极限lim[(sinx-siny)/(x-y)]x趋向y lim(x趋向于0)((tanx-sinx)/(x*(sinx)^2)) 求极限, x趋向0+时求lim(x^x-1)*lnx lim (x趋向于0)sin(sinx)/sinx 求极限lim{(x^2/sinx)×sin1÷x}x趋向0