Why is it that to find the inverse of a function we only need to find if it is one to one.From Wikipedia,
A relation can be determined to have an inverse if it is a one-to-one function.
If we come up with an example in which the function is one to one
but the range is not completely utilized(i.e no input produces that output or say it is not onto
) then what do we do with that element in its inverse function
?