lim _(xarrow +infty )(({3)^x+(9)^x)}^dfrac (1{x)}= ()-|||-(A)0 (B)9 (C)9e 3 (D)∞

1.求下列极限:-|||-(3) lim _(xarrow +infty )(({3)^x+(9)^x)}^dfrac (1{x)};

.lim _(xarrow infty )dfrac ({x)^2-9}(x-3)=3 ,则-|||-

(9) lim _(xarrow +infty )dfrac (ln (1+dfrac {1)(x))}(arctan x) :

(9) lim _(xarrow +infty )dfrac (ln (1+dfrac {1)(x))}(arctan x)-|||-()

(9) lim _(xarrow +infty )dfrac (ln (1+dfrac {1)(x))}(arctan x) ,

(5) lim _(xarrow 0)((dfrac {{a)^x+(b)^x+(c)^x}(3))}^dfrac (1{x)}(agt 0,bgt 0,cgt

求下列极限:-|||-lim _(xarrow +infty )(({2)^x+(3)^x)}^dfrac (1{x)}

9.求下列函数的极限-|||-(1) lim _(xarrow -1)dfrac ({x)^3-1}(x-1);-|||-(3) lim _(xarrow in

9.求下列函数的极限-|||-(1) lim _(xarrow -1)dfrac ({x)^3-1}(x-1) =-|||-(3) lim _(xarrow i

lim _(xarrow 0)((x+{e)^x)}^dfrac (1{x)}..