The limit is .

Consider different values of .

Consider .

Graph the function .

Observe the graph.

As tends to , approaches to .

.

Consider .

Graph the function .

Observe the graph.

As tends to , approaches to .

.

Consider .

Graph the function .

Observe the graph.

As tends to , approaches to .

From the above observations.

.

.

.

Therefore, we can conclude that, .

.