The Normal At A Point P on The Ellipse x2 + 4y2 = 16 Meets The X-axis At Q. If M is The Mid-point Of The Line Segment PQ then The Locus Of M intersects The Latusrectums Of The Given Ellipse At The Points    

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Question

The normal at a point P on the ellipse x2 + 4y2 = 16 meets the x-axis at Q. If M is the mid-point of the line segment PQ then the locus of M intersects the latusrectums of the given ellipse at the points    

Solution

Correct option is

 

 be a point on the given ellipse. The equation of the normal to P is  

    

                                   

The meets x-axis Q(3cos θ, 0)  

Let (hk) be the coordinates of M i.e. the mid-point of PQ.

Then, 

       

Hence, the locus of M is 

Let e be the eccentricity of the given ellipse. Then, 

     

So, the equations of the latusrecta of the given ellipse are.

 . These lines intersect the ellipse (i) at  

      

Hence, required coordinates are

      .   

SIMILAR QUESTIONS

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Q2

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Q9

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