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Byju's Answer
Standard IX
Mathematics
Linear Equation in 2 Variables
The solution ...
Question
The solution of
x
2
d
y
−
y
d
x
+
x
y
2
(
x
−
y
)
d
y
=
0
is
A
In
∣
∣
∣
x
−
y
x
y
∣
∣
∣
=
y
2
2
+
c
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B
In
∣
∣
∣
x
y
x
−
y
∣
∣
∣
=
x
2
2
+
c
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C
In
∣
∣
∣
x
−
y
x
y
∣
∣
∣
=
x
2
2
+
c
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D
In
∣
∣
∣
x
−
y
x
y
∣
∣
∣
=
y
+
c
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Solution
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Similar questions
Q.
Verify that the given functions (explicit or implicit) is a solution of the corresponding differential equation:
1.
y
=
e
x
+
1
:
y
′′
−
y
=
0
2.
y
=
x
2
+
2
x
+
C
:
y
′
−
2
x
−
2
=
0
3.
y
=
cos
x
+
C
:
y
′
+
sin
x
=
0
4.
y
=
√
1
+
x
2
:
y
′
=
x
y
1
+
x
2
5.
y
=
A
x
:
x
y
=
y
(
x
≠
0
)
6.
y
=
x
sin
x
:
x
y
=
y
+
x
√
x
2
y
2
(
x
≠
0
a
n
d
x
>
y
o
r
x
<
y
)
7.
x
y
=
log
y
+
C
:
y
′
=
y
2
1
−
x
y
(
x
y
≠
1
)
8.
y
−
cos
y
=
x
:
(
y
sin
y
+
cos
y
+
x
)
y
′
=
y
9.
x
+
y
=
tan
−
1
y
:
y
2
y
′
+
y
2
+
1
=
0
10.
y
=
√
a
2
−
x
2
x
ϵ
(
−
a
,
a
)
:
x
+
y
d
y
d
x
=
0
(
y
≠
0
)
Q.
Assertion (A): The solution of the equation
x
d
x
+
y
d
y
=
x
d
y
−
y
d
x
x
2
+
y
2
is
2
tan
−
1
y
x
−
1
=
x
2
+
y
2
+
c
Reason (R):
d
(
tan
−
1
y
x
)
=
x
d
y
−
y
d
x
x
y
Q.
Solution of the differential equation
y
(
x
y
+
2
x
2
y
2
)
d
x
+
x
(
x
y
−
x
2
y
2
)
d
y
=
0
is given by
p
.
|
l
o
g
|
x
|
+
Q
.
l
o
g
|
y
|
−
1
x
y
=
C
Q.
Find a particular solution of each of the following differential equations:
(i)
1
+
x
2
d
y
d
x
+
2
x
y
=
1
1
+
x
2
;
y
=
0
,
when
x
=
1
(ii) (x + y) dy + (x − y) dx = 0; y = 1 when x = 1
(iii) x
2
dy + (xy + y
2
) dx = 0; y = 1 when x = 1
Q.
What are the common factors of
3
x
3
y
,
5
x
y
2
and
15
x
y
?
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