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SUBJECT
Mathematics
CHAPTER
Functions
Periodic Functions
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JEE Advanced 1983
LEVEL
JEE Main
Which of the following functions is periodic?
(A)
f
(
x
)
=
x
−
[
x
]
where
[
x
]
denotes the largest integer less than or equal to the real number
x
(B)
f
(
x
)
=
sin
x
1
for
x
=
0
,
f
(
0
)
=
0
(C)
f
(
x
)
=
x
cos
x
(D)
none of these
