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Mathematics
Mathematics
Problem
The range of principal values of
y
=
arctan
x
y=\arctan x
y
=
arctan
x
is a)
(
−
π
2
,
π
2
]
(-\tfrac{\pi}{2},\tfrac{\pi}{2}]
(
−
2
π
,
2
π
]
b)
(
0
,
π
)
(0,\pi)
(
0
,
π
)
c)
(
−
π
2
,
π
2
)
(-\tfrac{\pi}{2},\tfrac{\pi}{2})
(
−
2
π
,
2
π
)
d)
[
−
π
2
,
π
2
]
[-\tfrac{\pi}{2},\tfrac{\pi}{2}]
[
−
2
π
,
2
π
]
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