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Exponentials & Logarithms
medium
0:00.0
If
f
(
x
)
=
2
x
+
1
f(x) = 2^{x+1}
f
(
x
)
=
2
x
+
1
, find
f
−
1
(
8
)
f^{-1}(8)
f
−
1
(
8
)
.
A
2
2
2
B
3
3
3
C
1
1
1
D
4
4
4
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