If f(x) = 
and 
then prove that f{(x)} = 
, when it is given that 
.
Given: f(x) =
, where 
Need to prove: f{f(x)} = 
when 
Now placing f(x) in place of x
⇒ 
⇒ 
⇒ 
, where 
[Proved]
1
If f(x) = and then prove that f{(x)} = , when it is given that .
Given: f(x) = , where
Need to prove: f{f(x)} = when
Now placing f(x) in place of x
⇒
⇒
⇒ , where [Proved]