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Byju's Answer
Standard X
Mathematics
Equal Sets
The set A=x...
Question
The set
A
=
x
:
|
2
x
+
3
|
<
7
is equal to
A
−
10
<
2
x
<
4
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B
−
11
<
2
x
<
4
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C
−
12
<
2
x
<
4
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D
−
13
<
2
x
<
4
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Solution
The correct option is
A
−
10
<
2
x
<
4
|
2
x
+
3
|
<
7
⇒
−
7
<
2
x
+
3
<
7
⇒
−
10
<
2
x
<
4
⇒
−
5
<
x
<
2
⇒
−
5
+
5
<
x
+
5
<
2
+
5
⇒
0
<
x
+
5
<
7
which is equivalent to set
W
so option
A
is correct.
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0
Similar questions
Q.
lim
x
→
∞
2
√
x
+
3
3
√
x
+
4
4
√
x
+
.
.
.
+
n
n
√
x
√
(
2
x
−
3
)
+
3
√
(
2
x
−
3
)
+
4
√
(
2
x
−
3
)
+
.
.
.
+
n
√
(
2
x
−
3
)
is equal to
Q.
If
∣
∣ ∣
∣
x
−
4
2
x
2
x
2
x
x
−
4
2
x
2
x
2
x
x
−
4
∣
∣ ∣
∣
=
(
A
+
B
x
)
(
x
−
A
)
2
, then the ordered pair
(
A
,
B
)
is equal to
Q.
If
∣
∣ ∣
∣
x
−
4
2
x
2
x
2
x
x
−
4
2
x
2
x
2
x
x
−
4
∣
∣ ∣
∣
=
(
A
+
B
x
)
(
x
−
A
)
2
Then the ordered pair (A,B) is equal to
Q.
The integral
∫
3
x
13
+
2
x
11
(
2
x
4
+
3
x
2
+
1
)
4
d
x
is equal to: (where C is a constant of integration)
Q.
det
∣
∣ ∣
∣
x
+
4
2
x
2
x
2
x
x
+
4
2
x
2
x
2
x
x
+
4
∣
∣ ∣
∣
=
(
5
x
+
4
)
(
4
−
x
)
2
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