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Mathematics
Problem
The least value of
(
n
−
2
)
x
2
+
8
x
+
n
+
4
>
sin
−
1
(
sin
12
)
+
cos
−
1
(
cos
12
)
(n-2)x^2 + 8x + n + 4 > \sin^{-1}(\sin 12) + \cos^{-1}(\cos 12)
(
n
−
2
)
x
2
+
8
x
+
n
+
4
>
sin
−
1
(
sin
12
)
+
cos
−
1
(
cos
12
)
,
∀
x
∈
R
\forall x \in \mathbb{R}
∀
x
∈
R
, where
n
∈
N
n \in \mathbb{N}
n
∈
N
, is .....
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