1.

A tangent to the parabola y^2 + 4bx = 0 meets the parabola y^2 = 4ax in P and Q. The locus of the middle points of PQ is:

Answer»

`x^2(2a+B)=4a^2y`
`y^2(2a+b)=4a^2x`
`y^2(a+b)=a^2x`
`x^2(a+b)=a^2y`

ANSWER :B


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