[题目]设曲线 y=f(x) 和 =(x)^2-x 在点(1,0)处有相同-|||-切线,则 lim _(narrow infty )nf(dfrac (n)(n+2))= __-|||-_.

设(x)=lim _(narrow infty )dfrac ({x)^n+2}(sqrt {{2)^2n+(x)^2n}}，则(x)=lim _(narrow

设曲线 y = f ( x ) 在原点处的切线方程为 y = 4 x，则lim _(narrow infty )nf(dfrac (4)(n))=（）设曲线y=

设 (x)=lim _(narrow infty )dfrac ({x)^n+2-(x)^-n}({x)^n+(x)^-n} 则函数(x)=lim _(narr

[题目]设 (x)=lim _(narrow infty )dfrac ((n-1)x)(n{x)^2+1} 则f(x)的间断点为 x=-|||-__ ..

设(x)=lim _(narrow infty )dfrac ({x)^2n-1+a(x)^2+bx}({x)^2n+1}-|||-+bx/，若(x)=lim

设函数(x)=lim _(narrow infty )dfrac ({x)^n+3}(sqrt {{3)^2n+(x)^2n}}(-infty lt xlt +

(2)设 (x)=lim _(narrow infty )dfrac ({x)^2n-1+a(x)^2+bx}({x)^2n+1} 若 =1, x=-1 均为f

设曲线f(x)=xn在点(1，1)处的切线与x轴的交点为(ξn，0)，则 lim n→∞ f(ξn)=______

(2)设函数 (x)=lim _(narrow infty )sqrt [n](1+{|x|)^3n}, 则 f(x)在 (-infty ,+infty ) 内

(2)设函数 (x)=lim _(narrow infty )sqrt [n](1+{|x|)^3n} 则 f(x)在 (-infty ,+infty ) 内