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Mathematics
Mathematics
Problem
If
f
(
x
)
=
sec
2
x
+
csc
2
x
f(x) = \sec 2x + \csc 2x
f
(
x
)
=
sec
2
x
+
csc
2
x
, then
f
(
x
)
f(x)
f
(
x
)
is discontinuous at all points in a.
{
n
π
,
n
∈
N
}
\{n\pi, n \in \mathbb{N}\}
{
nπ
,
n
∈
N
}
b.
{
(
2
n
±
1
)
π
4
,
n
∈
I
}
\left\{(2n \pm 1)\frac{\pi}{4}, n \in \mathbb{I}\right\}
{
(
2
n
±
1
)
4
π
,
n
∈
I
}
c.
{
n
π
4
,
n
∈
I
}
\left\{\frac{n\pi}{4}, n \in \mathbb{I}\right\}
{
4
nπ
,
n
∈
I
}
d.
{
(
2
n
±
1
)
π
8
,
n
∈
I
}
\left\{(2n \pm 1)\frac{\pi}{8}, n \in \mathbb{I}\right\}
{
(
2
n
±
1
)
8
π
,
n
∈
I
}
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