Algebra
Lección 220 de 224 · Focus and Directrix of a Parabola 2 · Estudios básicos
Focus and Directrix of a Parabola 2
Finding the focus and directrix of a parabola
More free lessons at: http://www.khanacademy.org/video?v=1Jm9rREA-uA
Lección 220 de 224 · Focus and Directrix of a Parabola 2 · Estudios básicos
Finding the focus and directrix of a parabola
More free lessons at: http://www.khanacademy.org/video?v=1Jm9rREA-uA