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

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

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

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

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

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

(2) lim _(xarrow infty )dfrac (arctan x)(x).

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

(6) lim _(xarrow infty )dfrac (arctan x)(x)

求lim _(xarrow infty )[ x-(x)^2ln (1+dfrac (1)(x))] -|||-__求

求极限：lim _(xarrow infty )((sin dfrac {1)(x)+cos dfrac (1)(x))}^x-|||-__ __求极限：