UPSC NDA II 2018 Mathematics Solved Paper

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Question : 92 of 120

Marks: +1, -0

If y=sin(ln‌x), then which one of the following is correct?

[NDA II 2018]

d2y
dx2
+y=0
d2y
dx2
=0
x2‌‌
d2y
dx2
+x‌‌
dy
dx
+y=0
x2‌‌
d2y
dx2
−x‌‌
dy
dx
+y=0

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