求下列式子的极限：lim _(xarrow +infty )((dfrac {pi )(2)-arctan x)}^dfrac (1{ln x)}-|||-__.

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

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

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

求lim _(xarrow +infty )((dfrac {2)(pi )arctan x)}^x-|||-__求

.求极限 lim _(xarrow infty )dfrac (arctan x)(x)..

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

(2) lim _(xarrow +infty )((dfrac {2)(pi )arctan x)}^x;

1.求下列极限：（2）lim _(xarrow dfrac {pi )(2)}dfrac (ln sin x)({(pi -2x))^2}1.求下列极限：（2）

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

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