If 
= 
for all x ϵ R – {0} then write an expression for f(x).
Given, 
= 
Let y = x + 
xy = 
+ 1
-xy + 1 =0
X= 
X=
f(y) = (
)
f(y) = ((
f(y) = 
– 2.
1
If = for all x ϵ R – {0} then write an expression for f(x).
Given, =
Let y = x +
xy = + 1
-xy + 1 =0
X=
X=
f(y) = ()
f(y) = ((
f(y) = – 2.