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Byju's Answer
Standard XI
Mathematics
Family of Planes
Consider the ...
Question
Consider the equation
a
z
+
b
¯
z
+
c
=
0
, where
a
,
b
,
c
ϵ
Z
If
|
a
|
≠
|
b
|
, then
z
represents
A
Circle
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B
Ellipse
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C
Straight line
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D
One point
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Solution
The correct option is
D
One point
Given:
a
z
+
b
¯
z
+
c
=
0
, where
a
,
b
,
c
ϵ
Z
a
z
+
b
¯
z
+
c
=
0
…
(
i
)
Taking conjugate of (i), we get
¯
a
¯
z
+
¯
b
z
+
¯
c
=
0
…
(
i
i
)
Eliminating
¯
z
from (i) and (ii)
z
=
c
¯
a
−
b
¯
c
|
b
|
2
−
|
a
|
2
If
|
a
|
≠
|
b
|
,
then
z
represents a point on the Argand plane.
Suggest Corrections
1
Similar questions
Q.
Consider the equation
a
z
+
b
¯
z
+
c
=
0
, where
a
,
b
,
c
ϵ
Z
If
|
a
|
=
|
b
|
≠
0
and
¯
a
c
=
b
¯
c
,
Then
a
z
+
b
¯
z
+
c
=
0
represents
Q.
Consider the equation
a
z
+
b
¯
¯
¯
z
+
c
=
0
, where
a
,
b
,
c
ϵ
Z
.
If
|
a
|
≠
|
b
|
, then z represents
Q.
Consider the equation
a
z
+
b
¯
¯
¯
z
+
c
=
0
, where
a
,
b
,
c
∈
Z
.
If
|
a
|
≠
|
b
|
,
then z represents
Q.
Consider the equation
a
z
+
b
¯
¯
¯
z
+
c
=
0
, where
a
,
b
,
c
ϵ
Z
.
If
|
a
|
−
|
b
|
≠
0
and
¯
¯
¯
a
c
=
b
¯
¯
c
, then
a
z
+
b
¯
¯
¯
z
+
c
=
0
represents
Q.
Consider the equation
a
z
+
b
¯
¯
¯
z
+
c
=
0
, where
a
,
b
,
c
∈
Z
.
If
|
a
|
=
|
b
|
≠
0
and
¯
¯
¯
a
c
=
b
¯
¯
c
, then
a
z
+
b
¯
¯
¯
z
+
c
=
0
represents
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Standard XI Mathematics
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