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Mathematics
Problem
If
f
(
x
)
=
x
+
4
f(x)=\sqrt{x+4}
f
(
x
)
=
x
+
4
and
g
(
x
)
=
1
x
−
1
g(x)=\dfrac{1}{x-1}
g
(
x
)
=
x
−
1
1
, calculate
(
g
∘
f
)
(
9
)
(g\circ f)(9)
(
g
∘
f
)
(
9
)
.
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