\
(a)
\The function is
.
Find
.
Graph :
\Graph the function
:
Observe the graph.
\As
tends to
then
approaches to
.
.
\
(b)
\The function is
.
Construct a table for different values of
to estimate the value of
.
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
![]() | \
Observe the table.
\As
closes to positive large number then
approaches to
.
.
\
(c)
\The limit is
.
Rationalize the function.
\


Quotient law of limit :
, if
.

Sum law of limit :
.

Root law of limit :
.


Theorem : If
is a rational number then
.

.
\
(a)
\Graph of the function
is
(b)
\
.
(c)
\
.