[New post] [Answer] A parabola has a vertex at the origin. The equation of the directrix of the parabola is y = 3. What are the coordinates of its focus?

answertrivia posted: " Answer: c. (0 -3) A parabola has a vertex at the origin. The equation of the directrix of the parabola is y = 3. What are the coordinates of its focus? It is proved in a preceding section that if a parabola has its ver" Respond to this post by replying above this line New post on AnswerTrivia.com [Answer] A parabola has a vertex at the origin. The equation of the directrix of the parabola is y = 3. What are the coordinates of its focus? by answertrivia Answer: c. (0 -3) A parabola has a vertex at the origin. The equation of the directrix of the parabola is y = 3. What are the coordinates of its focus? It is proved in a preceding section that if a parabola has its vertex at the origin and if it opens in the positive y direction then its equation is y = x 2 / 4f where f is its focal length. Comparing this with the last equation above shows that the focal length of the parabola in the cone is r sin θ. Position of the focus Thu Jan 03 2008 13:30:00 GMT-0500 (Eastern Standard Time) · Parabolas with center of inversion at the vertex . The equation of a parabola is up to ... x = y 2. In polar coordinates this becomes = ⁡ ⁡. The inverse curve then has equation = ⁡ ⁡ = ⁡ ⁡ which is the cissoid of Diocles. Conic sections with center of inversion at a focus . The polar equation of a conic section with one focus at the origin is up to similarity = + ⁡ where e is ... Quadratic function - Wikipedia Conic section - Wikipedia Inverse curve - Wikipedia Conic section - Wi... This free site is ad-supported. Learn more ​ answertrivia | 21st Apr 2021 at 2:20 pm | Categories: Uncategorized | URL: https://wp.me/pcLptW-KVC Comment    See all comments Unsubscribe to no longer receive posts from AnswerTrivia.com. Change your email settings at Manage Subscriptions. Trouble clicking? Copy and paste this URL into your browser: https://answertrivia.wordpress.com/2021/04/21/answer-a-parabola-has-a-vertex-at-the-origin-the-equation-of-the-directrix-of-the-parabola-is-y-3-what-are-the-coordinates-of-its-focus-4/ Thanks for flying with WordPress.com