1.

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

Answer»

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

ANSWER :B


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