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Byju's Answer
Standard XII
Mathematics
Monotonically Increasing Functions
The graph of ...
Question
The graph of the function
y
=
f
(
x
)
is symmetrical about the line
x
=
2
. Then,
A
f
(
x
+
2
)
=
f
(
x
−
2
)
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B
f
(
2
+
x
)
=
f
(
2
−
x
)
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C
f
(
x
)
=
f
(
−
x
)
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D
f
(
x
)
=
−
f
(
−
x
)
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Solution
The correct option is
B
f
(
2
+
x
)
=
f
(
2
−
x
)
If a function
h
(
x
)
is symmetrical about
y
a
x
i
s
(
i
.
e
.
x
=
0
)
, then we can write :
h
(
x
)
=
h
(
−
x
)
It can also be written as :
h
(
0
+
x
)
=
h
(
0
−
x
)
∴
a function f(x) which is symmetrical about
x
=
2
, can be written as:
f
(
2
+
x
)
=
f
(
2
−
x
)
Suggest Corrections
0
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