Find the range of the following functions given by (i) (ii)

Solution:

(i) 

As per the question,

Let ,

But, it is known that,

and

and

and

Or and

As a result, the range of

(ii)

As per the question,

For real value of ,

When we add negative sign, we have

Or

When we add 1 we have

Or

As a result, the range of