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Byju's Answer
Standard XIII
Mathematics
Even Extension of a Function
If the real v...
Question
If the real valued function
f
(
x
)
=
a
x
−
1
x
n
(
a
x
+
1
)
is even and
n
∈
N
, then least possible value of
n
is
A
1
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B
1.00
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C
01
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D
1.0
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Solution
∵
f
(
x
)
is even
∴
f
(
x
)
=
f
(
−
x
)
⇒
a
x
−
1
x
n
(
a
x
+
1
)
=
a
−
x
−
1
(
−
x
)
n
(
a
−
x
+
1
)
⇒
a
x
−
1
x
n
(
a
x
+
1
)
=
−
(
a
x
−
1
)
(
−
x
)
n
(
a
x
+
1
)
⇒
1
x
n
=
−
1
(
−
x
)
n
∴
least possible value for
n
=
1
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Even Extension of a Function
Standard XIII Mathematics
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