Parabola Focus and Directrix 1
Parabola as the locus of all points equidistant from a point and a line
More free lessons at: www.khanacademy.org/video?v=ZJf9shWlMz0
Correlated course
Pre-algebra - Khan Academy FREE
Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane
Cosmology and Astronomy - Khan Academy FREE
Videos attempting to grasp a little bit about our Universe (many of the topics associated with "Big History")
The Science of Biology FREE
High school Biology videos that I make for 10th grade Biology, 9th-10th grade Honors Biology, and Intro to the Human Body classes. Hope you find them helpful!
Linear Algebra - Khan Academy FREE
Matrices, vectors, vector spaces, transformations. Covers all topics in a first year college linear algebra course. This is an advanced course normally taken by science or engineering majors after tak
Microeconomics and Macroeconomics - Khan Academy FREE
Topics covered in an traditional college level introductory microeconomics and macroeconomics course
SAT Preparation - Khan Academy FREE
I am going to work through every problem in the College Board "Official SAT Study Guide." You should take the practice tests on your own, grade them and then use these videos to understand the problem
Chemistry - Khan Academy FREE
Videos on chemistry (roughly covering a first-year high school or college course).
Calculus - Khan Academy FREE
Topics covered in the first two or three semesters of college calculus. Everything from limits to derivatives to integrals to vector calculus. About Khan Academy: Khan Academy offers practice exerc
Chemistry and Macromolecules FREE
Chemistry for high school Biology. Biochemistry and the macromolecules - carbohydrates, lipids, proteins, and nucleic acids.
TAG Cloud
Web Stats
Active courses: 74,474
Lessons: 2,066,701
Data: 74 GB
Online: 38 users