____;
lim _(narrow infty )(2)^nsin dfrac (x)({2)^n}-|||-__(x为不等于零的常数)($$x$$为不等于零的常数)
设(x)=lim _(narrow infty )dfrac ({x)^n+2}(sqrt {{2)^2n+(x)^2n}},则(x)=lim _(narrow
求下列极限:-|||-lim _(narrow infty )(3)^nsin dfrac (x)({3)^n} _
设 (x)=lim _(narrow infty )dfrac ({x)^n+2-(x)^-n}({x)^n+(x)^-n} 则函数(x)=lim _(narr
求下列极限:lim _(narrow infty )(2)^nsin dfrac (x)({2)^n}-|||-__(x为不等于零的常数)求下列极限:(x为不等
设(x)=lim _(narrow infty )dfrac ({x)^2n-1+a(x)^2+bx}({x)^2n+1}-|||-+bx/,若(x)=lim
2.按 -N 定义证明:-|||-(1) lim _(narrow infty )dfrac (n)(n+1)=1 ;-|||-(2) lim _(narrow
(3)收敛, lim _(narrow infty )(2+dfrac (1)({n)^2})=2 --|||-(4)收敛, lim _(narrow inft
已知 lim _(narrow infty )(a)_(n)=2 lim _(narrow infty )(b)_(n)=3已知 lim _(narrow in
lim _(narrow infty )(tan )^n(dfrac (pi )(4)+dfrac (2)(n)) __-|||-__