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JEE Advanced 2015 Paper 2 Mathematics Q15
Mathematics
Problem
Let
f
(
x
)
=
7
tan
8
x
+
7
tan
6
x
−
3
tan
4
x
−
3
tan
2
x
f(x)=7\tan^8x+7\tan^6x-3\tan^4x-3\tan^2x
f
(
x
)
=
7
tan
8
x
+
7
tan
6
x
−
3
tan
4
x
−
3
tan
2
x
for all
x
∈
(
−
π
2
,
π
2
)
x\in\left(-\dfrac\pi2,\dfrac\pi2\right)
x
∈
(
−
2
π
,
2
π
)
. Then the correct expression(s) is(are)
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