Ellipse Caustic Curve
For an Ellipse given by
 |  |  | (1) |
 | |  | (2) |
with light source at
, the Caustic is | |  | (3) |
| |  | (4) |
where
 | |  | |
 |  | ||
|  | (5) | |
 | |  | |
|  | (6) | |
 | |  | (7) |
 | |  | |
|  | (8) |
At
, | |  | (9) |
| |  | (10) |
- For All
- Forcing
- Ford Circle
- Ford's Theorem
- Forest
- Fork
- Form
- Formal Logic
- Form (Geometric)
- Formosa Theorem
- Form (Polynomial)
- Formula
- Fortunate Prime
- Forward Difference
- Fountain
- Four Coins Problem
- Four-Color Theorem
- Fourier-Bessel Series
- Fourier-Bessel Transform
- Fourier Cosine Series
- Fourier Cosine Transform
- Fourier Integral
- Fourier Matrix
- Fourier-Mellin Integral
- Fourier Series