This question is an exact duplicate of:

Let normals are drawn to the parabola $y^2=8x$ from any point on the line $y=−4$ . Find the locus of vertices of triangle formed by the corresponding tangents ?

Tried based on this: http://citeseerx.ist.psu.edu/viewdoc/download?doi=

There are several conditions on the point A(t,−4) on the line $y=−4$ .

As locus is a part of the hyperbola $y=8x$ , but i find it very difficult to find.


marked as duplicate by amd, Community Mar 23 '18 at 14:18

This question was marked as an exact duplicate of an existing question.

  • $\begingroup$ You really shouldn't repost a question that's been put on hold; it's better to work on improving the question there. Also, the hyperbola is $y=8/x$, not $y=8x$; it's written correctly at math.stackexchange.com/questions/2701498/parabola-and-locus $\endgroup$ – Barry Cipra Mar 22 '18 at 17:00
  • $\begingroup$ The first one is also posted by me $\endgroup$ – Anna Mar 23 '18 at 14:19
  • $\begingroup$ I had edited it but didnt get any answers and didnt go off hold $\endgroup$ – Anna Mar 23 '18 at 14:20

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