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Byju's Answer
Standard XII
Mathematics
Applications Scalar Triple Product
If a,b,c are ...
Question
If a,b,c are linearly independent, then
[
2
a
+
b
,
2
b
+
c
,
2
c
+
a
]
[
a
,
b
,
c
]
=
A
9
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B
8
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C
7
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D
None
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Solution
The correct option is
A
9
[
2
a
+
b
,
2
b
+
c
,
2
c
+
a
]
[
a
,
b
,
c
]
=
∣
∣ ∣
∣
2
1
0
0
2
1
1
0
2
∣
∣ ∣
∣
=
2
(
4
−
0
)
−
1
(
0
−
1
)
=
8
+
1
=
9
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1
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Q.
If a,b,c are linearly independent, then
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∣
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∣
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