Prove that the inverse of the function , is also a linear fractional function. Under what condition coincides with its inverse.

- May 23rd 2009, 10:16 PMfardeen_genProve that inverse of function is also linear fractional fraction?
Prove that the inverse of the function , is also a linear fractional function. Under what condition coincides with its inverse.

- May 24th 2009, 07:47 AMHallsofIvy
The simplest way to do that is to

**find**the inverse!