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Mathematics
Problem
The solution set of the inequality
log
1
/
3
(
x
2
+
x
+
1
)
+
1
>
0
\log_{1/3}(x^2 + x + 1) + 1 > 0
lo
g
1/3
(
x
2
+
x
+
1
)
+
1
>
0
is _____. (a)
(
−
∞
,
−
2
)
∪
(
1
,
∞
)
(-\infty, -2) \cup (1, \infty)
(
−
∞
,
−
2
)
∪
(
1
,
∞
)
(b)
[
−
1
,
2
]
[-1, 2]
[
−
1
,
2
]
(c)
(
−
2
,
1
)
(-2, 1)
(
−
2
,
1
)
(d)
R
R
R
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