[题目]-|||-设 lim _(xarrow infty )((dfrac {x+2a)(x-a))}^x=8 且 a≠0, 求常数a的值.
81.已知 lim _(xarrow a)dfrac (f(x)-A)(x-a)=k, 求 lim _(xarrow a)dfrac ({e)^f(x)-(e)
(3)已知极限 lim _(xarrow +infty )(dfrac ({x)^2}(x+1)-x-a)=2, 则常数a是(
求lim _(xarrow infty )xsin dfrac (2)(x)求
求lim _(xarrow infty )dfrac (sin dfrac {3)(x)}(sin dfrac {2)(x)}求
[题目]求 lim _(xarrow infty )((sin dfrac {2)(x)+cos dfrac (1)(x))}^x
求lim _(xarrow +infty )((dfrac {2)(pi )arctan x)}^x-|||-__求
.求极限 lim _(xarrow infty )dfrac (arctan x)(x)..
3.求下列函数的极限.-|||-(1) lim _(xarrow infty )x((e)^dfrac (1{x)}-1);-|||-(2) lim _(xar
[题目]求极限 lim _(xarrow infty )((sin dfrac {2)(x)+cos dfrac (1)(x))}^x= __