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Standard XII
Mathematics
How to Find the Inverse of a Function
Question
If
f
(
x
)
=
x
+
2
x
−
1
=
y
, then.
x
=
f
(
y
)
f
(
1
)
=
3
f
(
y
)
=
2
f
(
x
)
f
(
y
)
=
2
+
f
(
x
)
A
f
(
y
)
=
2
f
(
x
)
B
f
(
y
)
=
2
+
f
(
x
)
C
x
=
f
(
y
)
D
f
(
1
)
=
3
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Solution
Verified by Toppr
Given,
f
(
x
)
=
x
+
2
x
−
1
=
y
=
>
x
+
2
=
y
(
x
−
1
)
=
>
y
+
2
=
x
y
−
x
=
>
x
(
y
−
1
)
=
(
y
+
2
)
=
>
x
=
y
+
2
y
−
1
=
>
x
=
f
(
y
)
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Similar Questions
Q1
If
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=
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x
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=
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Q2
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Q3
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Q4
Let
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)
=
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)
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∀
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Q5
If
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