Trig Equation and Function f(beta) (Jee Mains) | ExamDuo
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Chain Rule and Composite Functions
Medium
Trig Equation and Function f(beta)
Let
f
(
θ
)
=
3
(
s
i
n
4
(
3
π
2
−
θ
)
+
s
i
n
4
(
3
π
+
θ
)
)
−
2
(
1
−
s
i
n
2
2
θ
)
and
S
=
{
θ
∈
[
0
,
π
]
:
f
′
(
θ
)
=
−
√
3
2
}
. If
4
β
=
∑
θ
∈
S
θ
, then
f
(
β
)
is equal to
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SELECT ONE OPTION
A
11
8
B
5
4
C
9
8
D
3
2
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