- #1

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do you guys have msn? i have one.

- Thread starter no idea
- Start date

- #1

- 93

- 0

do you guys have msn? i have one.

- #2

selfAdjoint

Staff Emeritus

Gold Member

Dearly Missed

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There is a mathematical definition of focus too. Take a line, any line, and call it a

If k = 1 the locus is a parabola

If k < 1 the locus is an ellipse

If k > 1 the locus is a hyperbola.

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