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Question
Mathematics
The period of the function f(x)=a tan (π x)+x-[x] where a>0,[ . ] denotes the greatest integer function and x is a real number, is
Q. The period of the function
f
(
x
)
=
a
{
t
a
n
(
π
x
)
+
x
−
[
x
]}
,
where
a
>
0
,
[
.
]
denotes the greatest integer function and
x
is a real number, is
1878
238
KEAM
KEAM 2007
Relations and Functions - Part 2
Report Error
A
π
B
π
/2
C
π
/4
D
2
π
E
1
Solution:
∵
f
(
x
)
=
a
{
t
a
n
(
π
x
)
+
x
−
[
x
)}
=
a
{
t
a
n
(
π
x
)
+
x
}
From above it is clear that period of
f
(
x
)
is 1.