Tardigrade
Tardigrade - CET NEET JEE Exam App
Exams
Login
Signup
Tardigrade
Question
Mathematics
The integrating factor of (dy/dx) + y = (1 + y/x) is
Q. The integrating factor of
d
x
d
y
+
y
=
x
1
+
y
is
11456
199
KCET
KCET 2018
Differential Equations
Report Error
A
x
e
x
26%
B
x
e
1/
x
25%
C
x
e
x
40%
D
e
x
x
10%
Solution:
Given
d
x
d
y
+
y
=
x
1
+
y
⇒
d
x
d
y
+
y
=
x
1
+
x
y
⇒
d
x
d
y
+
(
1
−
x
1
)
y
=
x
1
∴
I
F
−
e
∫
(
1
−
x
1
)
d
x
=
e
x
−
l
o
g
x
=
x
e
x