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Mathematics
Mathematics
Problem
If
f
:
R
→
R
f: \mathbb R \to \mathbb R
f
:
R
→
R
is defined by
f
(
x
)
=
3
x
+
2
f(x)=3x+2
f
(
x
)
=
3
x
+
2
, (i) find
f
−
1
(
x
)
f^{-1}(x)
f
−
1
(
x
)
, (ii) evaluate
f
−
1
(
f
(
4
)
)
f^{-1}\bigl(f(4)\bigr)
f
−
1
(
f
(
4
)
)
.
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