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The differential equation of the family ...

The differential equation of the family of circles passing through the fixed points (a, 0) and (-a, 0) is

A

`y_(1)(y^(2)-x^(2))+2xy+a^(2)=0`

B

`y_(1)y^(2)+xy+a^(2)x^(2)=0`

C

`y_(1)(y^(2)-x^(2)+a^(2))+2xy=0`

D

`y_(1)(y^(2)+x^(2))-2xy+a^(2)=0`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2008-MULTIPLE CHOICE QUESTIONS
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  18. If P(at(2),2at) be one end of a focal chord of the parabola y^(2)=4ax,...

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  19. The length of the common chord of the parabolas y^(2)=x and x^(2)=y is

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