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Mathematics
Problem
Solve the differential equation
(
1
+
x
)
(
1
+
y
2
)
d
x
+
(
1
+
y
)
(
1
+
x
2
)
d
y
=
0.
(1+x)(1+y^2)dx + (1+y)(1+x^2)dy = 0.
(
1
+
x
)
(
1
+
y
2
)
d
x
+
(
1
+
y
)
(
1
+
x
2
)
d
y
=
0.
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