用洛必达法则求下列极限:-|||-(9) lim _(xarrow +infty )dfrac (ln (1+dfrac {1)(x))}(arctan (x)-|||-(10) lim _(xarrow 0)dfrac (ln (1+{x)^2)}(sec x-cos x)-|||-(11)limxcot2x;-|||-(12) lim _(xarrow 0)(x)^2(e)^1/(x^2);

极限 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)-|||-()

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

1.求下列极限.-|||-(4) lim _(xarrow +infty )dfrac (ln (1+dfrac {1)(x))}(dfrac {pi )(2)

1.用洛必达法则求下列极限.-|||-(1) lim _(xarrow 0)dfrac (ln (1+x))(x) :-|||-(3) lim _(xarrow

1.用洛必达法则求下列各极限:-|||-(1) lim _(xarrow 0)dfrac (ln (1+x))(x)-|||-(3) lim _(xarrow

1.用洛必达法则求下列极限:-|||-(1) lim _(xarrow 0)dfrac (ln (1+x))(x)-|||-(4) lim _(xarrow p

求极限lim _(xarrow +infty )(({x)^dfrac (1{x)}-1)}^dfrac (1{ln x)}.求极限.

求下列极限lim _(xarrow infty )dfrac ({(1+dfrac {1)(x))}^(x^2)}({e)^x}求下列极限