If is defined by , then
Explanation for the correct answer:
For a function to be invertible, the function must be one-one and onto.
The range of is , while the co-domain of is given as
Hence, is not onto.
Also, since , is also not one-one in its domain.
Therefore, is not invertible, i.e., the function does not exist.
Hence, the correct answer is option (C).