Given f(x)
f
(
x
)
, find g(x)
g
(
x
)
and h(x)
h
(
x
)
such that f(x)=g(h(x))
f
(
x
)
=
g
(
h
(
x
)
)
and neither g(x)
g
(
x
)
nor h(x)
h
(
x
)
is solely x.