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Mathematics
Mathematics
Problem
Show that the function
y
=
sec
x
y=\sec x
y
=
sec
x
is not defined at
x
=
π
2
+
n
π
x=\dfrac{\pi}{2}+n\pi
x
=
2
π
+
nπ
,
n
∈
Z
n\in\mathbb{Z}
n
∈
Z
, and hence write its domain.
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