Tardigrade
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Tardigrade
Question
Mathematics
For x ≠ ( n π/2) where n ∈ I, the range of function f(x)= operatornamesgn( sin x)+ operatornamesgn( cos x)+ operatornamesgn( tan x)+ operatornamesgn( cot x) is equal to [Note: operatornamesgn x denotes signum function of x.]
Q. For
x
=
2
nπ
where
n
∈
I
, the range of function
f
(
x
)
=
sgn
(
sin
x
)
+
sgn
(
cos
x
)
+
sgn
(
tan
x
)
+
sgn
(
cot
x
)
is equal to
[Note:
sgn
x
denotes signum function of
x
.]
87
131
Relations and Functions - Part 2
Report Error
A
{
−
2
,
4
}
B
{
−
2
,
0
,
4
}
C
{
−
4
,
−
2
,
0
,
4
}
D
{
0
,
2
,
4
}
Solution:
Correct answer is (b)
{
−
2
,
0
,
4
}