WebIn this form you just need to memorize that the focus is (C, D + p) and the directrix is y = D - p. if you prefer not to use the p then you have (C, D + 1/ [4A]) and y = D - 1/ [4A]. Once again, this is for vertical parabola and the horizontal ones are just a bit different. You can us the same methods to find them though. WebParabola Calculator. This parabola calculator can help you calculate the vertex, focus, directrix and the x intercepts of a parabola if you know its equation. Y. =. X 2. +.

Focus and Directrix of a Parabola - mathwarehouse

WebThe focus of parabola is a point, and the directrix of parabola is a straight line, which are helpful to define the parabola. A parabola is the locus of a point which is equidistant from a fixed point called the focus, and the fixed-line called the directrix. WebFree Parabola calculator - Calculate parabola foci, vertices, axis and directrix step-by-step two folds on either side of the glottis

Intro to focus & directrix (video) Khan Academy

http://www.endmemo.com/geometry/parabolaequation.php WebThis video tutorial provides a basic introduction into parabolas and conic sections. It explains how to graph parabolas in standard form and how to graph parabolas with the focus and... WebParabola Vertex Focus Calculator Formulas. (Y = aX 2 + bX + c, a≠0) • Focus X = -b/2a. • Focus Y = c - (b 2 - 1)/4a. • Vertex X = -b/2a. • Directrix Y = c - (b 2 + 1)/4a. • X Intercept = -b/2a ± √ (b * b - 4ac) /2a,0. Parabola … two folk films