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Byju's Answer
Standard XII
Mathematics
Properties of Inverse Function
f: R → R is a...
Question
f
:
R
→
R
is a function defined by
f
(
x
)
=
10
x
−
7
. If
g
=
f
−
1
, find
g
(
x
)
.
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Solution
Given,
f
(
x
)
=
10
x
−
7
⇒
y
=
10
x
−
7
⇒
y
+
7
=
10
x
⇒
x
=
y
+
7
10
Interchanging
x
and
y
⇒
f
−
1
(
x
)
=
g
=
x
+
7
10
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f
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Q.
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