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Byju's Answer
Standard XII
Mathematics
Method of Intervals
If 1+1x0, the...
Question
If
1
+
1
x
<
0
, then
x
lies in
A
(
−
∞
,
−
1
)
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B
(
−
1
,
0
)
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C
(
−
1
,
∞
)
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D
(
−
∞
,
0
)
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Solution
The correct option is
B
(
−
1
,
0
)
1
+
1
x
<
0
⇒
x
+
1
x
<
0
I
.
x
+
1
<
0
and
x
>
0
⇒
x
<
−
1
,
x
>
0
→
not possible
II
.
x
+
1
>
0
⇒
x
>
−
1
and
x
<
0
Taking union of both the cases:
x
∈
(
−
1
,
0
)
Suggest Corrections
0
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