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Byju's Answer
Standard XII
Mathematics
Definition of Functions
Assertion : ...
Question
Assertion :
∫
3
x
+
7
3
x
2
+
14
x
−
5
d
x
=
1
2
log
|
3
x
2
+
14
x
−
5
|
+
c
Reason :
∫
f
′
(
x
)
f
(
x
)
d
x
=
log
|
f
(
x
)
|
+
c
A
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
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B
Both Assertion and Reason are true but Reason is not correct explanation of Assertion
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C
Assertion is true but Reason is false
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D
Assertion is false but Reason is true
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Solution
The correct option is
A
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
A
=
∫
3
x
+
7
3
x
2
+
14
x
−
5
d
x
=
1
2
∫
6
x
+
14
3
x
2
+
14
x
−
5
d
x
=
1
2
log
∣
3
x
2
+
14
x
−
5
∣
+
c
.....
(
∵
∫
f
′
(
x
)
f
(
x
)
d
x
=
log
|
f
(
x
)
|
+
c
)
R is true
Hence, A and R are true and R is the correct explanation of A.
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