The differential equation of all parabolas having their axis of symmetry coinciding with the axis of x is
A
`y(d^(2)y)/(dx^(2)) +((dy)/(dx))^(2)=0`
B
`x(d^(2)x)/(dy^(2))+((dx)/(dy))^(2)=0`
C
`y(d^(2)y)/(dx^(2))+(dy)/(dx)=0`
D
none of these
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The correct Answer is:
A
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