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Byju's Answer
Standard XII
Mathematics
Monotonically Increasing Functions
Let the value...
Question
Let the values of x which satisfy the inequalities
x
2
−
3
x
+
2
>
0
and
x
2
−
3
x
−
4
≤
0
be
[
m
,
n
)
(
p
,
q
]
.Find
m
+
n
+
p
+
q
?
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Solution
x
2
−
3
x
+
2
>
0
and
x
2
−
3
x
+
2
≤
0
∴
(
x
−
1
)
(
x
−
2
)
>
0
⇒
x
<
1
,
x
>
2
...(1)
and
(
x
+
1
)
(
x
−
4
)
≤
0
⇒
−
1
≤
x
≤
4.
...(2)
Thus from (1) and (2),
x
∈
[
−
1
,
1
)
∪
(
2
,
4
]
.
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