# a little homework help

• June 25th 2006, 10:45 AM
starbrite
a little homework help
what is the f ^-1 inverse of f (x) = x+1/x-1
How would I work this problem? Thank you !
• June 25th 2006, 01:07 PM
Jameson
So to find the inverse, switch the x's and y's.

$x=\frac{y+1}{y-1}$

$xy-x=y+1$

$y(x-1)=1+x$

$f^{-1}(x)=\frac{x+1}{x-1}$