limx趋向于0[xsin(3/x)+tanx/2x]的极限

limx趋向于0[xsin(3/x)+tanx/2x]的极限 limx趋向于无穷（2xsin(2/x)）的极限计算步骤 limx趋向0{xsin(x分之一）-x分之一sinx}的极限 求极限：limx^(x^x-1),x趋向于0+ limx趋向于0 求极限x-sinx／x-tanx limx趋向于0时x-sinx/x+tanx limx^3+2/3x+4 x趋向于无穷? 由x趋向于正无穷,limx^(1/x)=1证明x趋向于0+,limx^x=1 limx趋向于0(2x-1)^5/((2x+1)^2(1-3x)^2) limx/sinx.x趋向于0的极限 limx趋向于0,(1/sinx-1/x)=? 求x趋向于0时,limx^lnx的值 limx(x趋向于0）xsinx=? limx/√1-cosx,x趋向于0- limx趋向于0,ln(1+2x)/xsinx limx趋向于0 xln(sin(x^2)) limx趋向于0,x^2/ln(1-3x)=? 求极限：limx趋向于0 (e)^(x)^2-1/ln(1+3x^2)