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VITEEE 2019 Solved Paper
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© examsnet.com
Question : 95
Total: 125
If a, b, c are in A. P., then the value of
|
x
+
1
x
+
2
x
+
a
x
+
2
x
+
3
x
+
b
x
+
3
x
+
4
x
+
c
|
is:
3
-3
0
None of these
Validate
Solution:
Given a, b, c are in A.P.
∴ 2b = a + c.....(i)
Now,
|
x
+
1
x
+
2
x
+
a
x
+
2
x
+
3
x
+
b
x
+
3
x
+
4
x
+
c
|
[Applying
R
2
→
2
R
2
]
=
1
2
|
x
+
1
x
+
2
x
+
a
2
x
+
4
2
x
+
6
2
x
+
2
b
x
+
3
x
+
4
x
+
c
|
=
1
2
|
x
+
1
x
+
2
x
+
a
2
x
+
4
2
x
+
6
2
x
+
(
a
+
c
)
x
+
3
x
+
4
x
+
c
|
[using equation (i)]
=
1
2
|
x
+
1
x
+
2
x
+
a
0
0
0
x
+
3
x
+
4
x
+
c
|
=
0
[Applying
R
2
→
R
2
−
(
R
1
+
R
3
)
]
© examsnet.com
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