证明:lim _(narrow infty )(({2)^n+(4)^n+(6)^n)}^dfrac (1{n)}=6.

求极限lim _(narrow infty )dfrac ({2)^n+(3)^n+(7)^n}({5)^n+(8)^n}lim _(narrow infty

(6) lim _(narrow infty )dfrac ({5)^n-(3)^n}({5)^n+(2)^n}

【题目】-|||-(11) lim _(narrow infty )sqrt [n]({2)^n+(3)^n+(4)^n}= __-|||-(12)设 lim

lim _(narrow infty )dfrac ({2)^n+(3)^n}({2)^n+1+(3)^n+1}=________;________;

(5) lim _(narrow infty )dfrac ({(-2))^n+(3)^n}({(-2))^n+1+(3)^n+1} ,

【题文】lim _(narrow infty )dfrac ({2)^n+1+(3)^n+1}({2)^n+(3)^n}=________.【题文】______

[题目]-|||-(5) lim _(narrow infty )dfrac ({(-2))^n+(3)^n}({(-2))^n+1+(3)^n+1} ;

[题目]-|||-(5) lim _(narrow infty )dfrac ({(-2))^n+(3)^n}({(-2))^n+1+(3)^n+1} ;

求极限lim _(narrow infty )dfrac ({5)^n+(2)^n}({5)^n-(3)^n}求极限

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