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UPSC NDA I 2024 Mathematics Solved Paper
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© examsnet.com
Question : 72
Total: 120
The differential equation, representing the curve
y
=
e
x
(
a
cos
x
+
b
s
i
n
x
)
where
a
and
b
are arbitrary constants, is
d
2
y
d
x
2
+
2
y
=
0
d
2
y
d
x
2
+
2
d
y
d
x
+
2
y
=
0
d
2
y
d
x
2
−
2
d
y
d
x
+
2
y
=
0
d
2
y
d
x
2
+
y
=
0
Validate
Solution:
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