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The differential equation of the family of parabolas with vertex at `(0,-1)` and having axis long the `Y`-axis is

A

`yy'+2xy+1=0`

B

`xy'+y+1=0`

C

`xy'-2y-2=0`

D

`xy'-y-1=0`

Text Solution

Verified by Experts

The correct Answer is:
C
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SIA PUBLICATION-DIFFERENTIAL EQUATIONS-Problems
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