focal distance
Chinese equivalent: 焦准距
focal distance The distance from the focus to the directrix, usually denoted by p ( p > 0 ). In the standard equation y² = 2px, p is the focal distance.
Syllabus path: Geometry and Algebra › Plane Analytic Geometry › Equations and Properties of Parabolas
CSCA Exam Prep
This term is aligned to the CSCA undergraduate admissions exam syllabus. Continue with the linked tutorial and topic practice.
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CSCA Mathematics Exam Glossary
Definition
focal distance The distance from the focus to the directrix, usually denoted by p ( p > 0 ). In the standard equation y² = 2px, p is the focal distance.
Related tutorial and examples
Equations and Properties of Parabolas
Equations and Properties of Parabolas The parabola is the only conic section with an "eccentricity e = 1 ". The key to this topic is applying the geometric definition. In the CSCA exam, mastering the four standard equations and using the "Definition Method" are crucial. 1. Defini…
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