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Engineering Mathematics
Non-Homogeneous Linear Systems
The value of ...
Question
The value of
λ
such that the system given below does not have any solution is ______.
x
−
2
y
+
z
=
−
4
2
x
−
y
+
2
z
=
2
x
+
y
+
λ
z
=
4
1
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Solution
The correct option is
A
1
For no solution
D
=
0
∣
∣ ∣
∣
1
−
2
1
2
−
1
2
1
1
λ
∣
∣ ∣
∣
=
0
(
−
λ
−
2
)
+
2
(
2
λ
−
2
)
+
(
3
)
=
0
⇒
−
λ
−
2
+
4
λ
−
4
+
3
=
0
⇒
3
λ
−
3
=
0
⇒
λ
=
1
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0
Similar questions
Q.
The system of equation
2
x
−
y
+
2
z
=
2
x
−
2
y
−
z
=
−
4
,
x
+
y
+
λ
z
=
4
has no solutions, then
λ
is
Q.
x
+
2
y
+
z
=
4
2
x
+
y
+
2
z
=
5
x
−
y
+
z
=
1
The system of algebraic equations given above has
Q.
If
Δ
1
=
∣
∣ ∣
∣
x
−
y
−
z
2
x
2
x
2
y
y
−
z
−
x
2
y
2
z
2
z
z
−
x
−
y
∣
∣ ∣
∣
and
Δ
2
=
∣
∣ ∣
∣
x
+
y
+
2
z
x
y
z
y
+
z
+
2
x
y
z
x
z
+
x
+
2
y
∣
∣ ∣
∣
then
Q.
Find the angle between the planes.
(i) 2x − y + z = 4 and x + y + 2z = 3
(ii) x + y − 2z = 3 and 2x − 2y + z = 5
(iii) x − y + z = 5 and x + 2y + z = 9
(iv) 2x − 3y + 4z = 1 and − x + y = 4
(v) 2x + y − 2z = 5 and 3x − 6y − 2z = 7
Q.
If the system of equations 2x - y - z = 12, x - 2y + z = -4, x + y + λz = 4 has no solution, then λ = ________________.
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