Step 1:

The limit of a function is $\"\"$ .

Let $\"\"$ .

To estimate the value of $\"\"$ , construct a table with nearest values of $\"\"$ .

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

\ $\"\"$ \	\ 3.9 \	\ 3.99 \	\ 3.999 \	\ 4.001 \	\ 4.01 \	\ 4.1 \
\ $\"\"$ \	\ 3.9 \	\ 3.99 \	\ 3.999 \	\ 4.001 \	\ 4.01 \	\ 4.1 \

Observe the table.

The value of $\"\"$ at $\"\"$ is 3.999 and the value of $\"\"$ at $\"\"$ is 4.001.

Therefore the value of $\"\"$ at $\"\"$ is 4.

$\"\"$

Solution:

$\"\"$