\
The function is
.
To find the horizontal asymptote, evaluate the limit of the function as
.

Therefore the horizontal asymptote is
.
\
Find the vertical asymptote.
\Vertical asymptote appears when the function is not defined.
\To find the vertical asymptote, equate denominator of the function to zero.
\So 

and 
and
.
Therefore the vertical asymptotes are
and
.
Verification :
\Graph :
\Graph the function
:

Observe the graph.
\The horizontal asymptote is
and vertical asymptotes are
and
.
\
The horizontal asymptote is
.
The vertical asymptote are
and
.