UPSC NDA II 2023 Mathematics Solved Paper

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Consider the following for the next two (02) items that follow :
A parabola passes through (1,2) and satisfies the differential equation ‌
dy
dx
=‌
2y
x
,x>0
,y>0
.
[NDA II 2023]
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What is the directrix of the parabola?
[NDA II 2023]
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