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Question

Answer 1

(1)

Step 1:

Observe the graph:

Left hand limit :

As tends to from left side, approaches to .

.

Right hand limit :

As  tends to  from right side, approaches to .

.

Left hand limit and right hand limit are equal, limit exist.

.

exist.

Solution:

.

Answer 2

(2)

Step 1:

The limit expression is .

Evaluate the limit.

.

Solution: