how to find inverse?

reloadedxp
Tue, 24 Jun 2008 01:44:41 +0000

if my math is rit, its C
1st - switch X and Y
x=2y/y-1
x(y-1)=2y
xy-x=2y
xy-2y=x
y(x-2)=x
y=x/x-2 -----> Answer