Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20050812 22:52:49
**_ Parametrics _**Hi,, #2 20050813 00:14:52
Re: **_ Parametrics _**I'm not sure what you mean by focus and directix, but it's easy enough to convert it into a normal cartesian equation. Why did the vector cross the road? It wanted to be normal. #3 20050826 12:05:22
Re: **_ Parametrics _**use the focus directrix form of the eqn of a parabola: 