Q.

If the locus of the mid points of the chords of the ellipse x2a2+y2b2=1,  drawn parallel to y=m1x is y=m2x then m1m2 =

 

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a

-b2a2

b

b2a2

c

-a2b2

d

a2b2

answer is C.

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Detailed Solution

Here y=m1x and y=m2x are conjugate diameters of ellipse So,m1m2=-b2a2

 

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