limx趋向于0,k(1+3x))^-2/x (k为常数.求极限求详细解答

limx趋向于0,k(1+3x))^-2/x (k为常数.求极限求详细解答 limx趋向于0,ln(1+2x)/xsinx limx趋向于0(2x-1)^5/((2x+1)^2(1-3x)^2) 求极限：limx趋向于0 (e)^(x)^2-1/ln(1+3x^2) limx趋向于0,x^2/ln(1-3x)=? 已知limx趋向于0（1+kx）ˇ1／x=3,求常数k的值 limx趋向于0,f(x0-kx)-f(x0)/x=3,求k 求极限：limx^(x^x-1),x趋向于0+ 高数求极限 limx趋向于3 (1-X/3)的1/x-3次方limx趋向于3 (X/3)的1/x-3次方limX趋向于无穷 （X-2/X+2）的X次方 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,(1/sinx-1/x)=? limx/√1-cosx,x趋向于0- limx趋向于0 xln(sin(x^2)) limX*tan(1/x)趋向于无穷 limx趋向于0负x^2+2x/绝对值x(x+1)等于多少 计算limx^2y/x^2+y^2,x趋向于0.y趋向于1~ limx趋向于0（x^2/x^2-1）^2x