UPSC NDA I 2019 Mathematics Solved Paper

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Question : 74 of 120

Marks: +1, -0

The differential equation of the system of circles touching the y-axis at the origin is

[NDA I 2019]

x2+y2−2‌xy
dy
dx
=0
x2+y2+2‌xy
dy
dx
=0
x2−y2+2‌xy
dy
dx
=0
x2−y2−2‌xy
dy
dx
=0

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