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If (0,4) and (0,2) are respectively the ...

If (0,4) and (0,2) are respectively the vertex and focus of a parabola, then its equation is

A

`x^(2)+8 y=32`

B

`y^(2)+8 x-32`

C

`x^(2)-8 y=32`

D

`y^(2)-8 x=32`

Text Solution

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The correct Answer is:
A
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  18. The condition for the line L x+m y+n=0 to be a tangent for x^(2)=y is

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