Friday

January 30, 2015

January 30, 2015

Posted by **mani** on Tuesday, April 2, 2013 at 12:42pm.

- geometry -
**Steve**, Tuesday, April 2, 2013 at 1:35pmwe can without loss of generality let the line be the x-axis, and F be at (0,k+1).

We know that if the ratio is 1, the locus is a parabola. Maybe it still is.

If P starts at (0,1) the ratio is k. We have

y = √(x^2 + (k-y)^2)

y^2 = x^2 + y^2 - 2ky + k^2

2ky = x^2+k^2

it's still a parabola.

**Answer this Question**

**Related Questions**

geometry - A point is moving in a plane in such a way that its distance from the...

Geometry - 4.Determine which point does not lie on the graph of the line y=x-3 a...

trigonometry - The angle of elevation of the top of a tower to point A on the ...

physics - A toy plane p starts flying from point A along a straight horizontal ...

Linear Algebra - In 3-space, a plane abc is spanned by three points a, b, c. The...

Geometry - Okay heres the pic. There is a plane with points B,D, and E.those [...

geometry - To find the distance from the house at point D to the house at point ...

Precalc - At the point were a line intersects a plane [with the equation (24x+...

geometry - if a plane leaves a horizontal at an angle of 60 degrees and at 1 ...

Geometry - Point P is located on the segment between point A(1,4) and point D(7,...