https://hi.khanacademy.org/math/class-12-bridge/x09646558c1ff0797:coordinate-geometry/x09646558c1ff0797:parabola/v/focus-and-directrix-introduction 2021-02-15T05:25:15Z नाभि और नियता का परिचय A parabola is the set of all points equidistant from a point (called the "focus") and a line (called the "directrix"). See this video to learn more about this. video https://cdn.kastatic.org/googleusercontent/vHEIbri_Ra7d2MGcjent-C6nyMncsnZ_bZrmVsB1k3VSQZfThO4So8QnSbdlsjT_6xg2cjqoS3ZaQEpF0xy_OYid नाभि और नियता का परिचय A parabola is the set of all points equidistant from a point (called the "focus") and a line (called the "directrix"). See this video to learn more about this. https://cdn.kastatic.org/ka-youtube-converted/f22NzXhYabI.mp4/f22NzXhYabI.mp4 247 परवलय (Parabola) https://hi.khanacademy.org/math/class-12-bridge/x09646558c1ff0797:coordinate-geometry/x09646558c1ff0797:parabola/v/equation-for-parabola-from-focus-and-directrix 2021-02-15T05:25:15Z नाभि और नियता से एक परवलय का समीकरण The equation of a parabola is derived from the focus and directrix, and then the general formula is used to solve an example. video https://cdn.kastatic.org/googleusercontent/E-dbou6Jw2dQISA_z84rO95zii-A6Xg1Z0p6X2F3Mn0ptl2V5adv0SPNIz9a-JLpoCh9lYmj6Mh1IKo_43AhuBrw नाभि और नियता से एक परवलय का समीकरण The equation of a parabola is derived from the focus and directrix, and then the general formula is used to solve an example. https://cdn.kastatic.org/ka-youtube-converted/gMktMlMaCYQ.mp4/gMktMlMaCYQ.mp4 588 परवलय (Parabola) https://hi.khanacademy.org/math/up-math-class-11/x808831787a7b08a2:conic-sections-ncert-new/x808831787a7b08a2:parabola/v/finding-focus-and-directrix-from-vertex 2021-02-15T05:25:15Z एक परवलय के समीकरण से उसकी नाभि और नियता Given the parabola equation y-23/4=-1/3(x-1)^2, Sal finds the parabola's focus and directrix using the general formula for a parabola whose focus is (a,b) and directrix is y=k. video https://cdn.kastatic.org/googleusercontent/XdjPbkxSjRS_lFGjYHyg_JSdemU9OBan4SHBbcgfJBq3O_UMvmts2CncowooAxIItMFYEThAiKaDTAxLpg0qrb8 एक परवलय के समीकरण से उसकी नाभि और नियता Given the parabola equation y-23/4=-1/3(x-1)^2, Sal finds the parabola's focus and directrix using the general formula for a parabola whose focus is (a,b) and directrix is y=k. https://cdn.kastatic.org/ka-youtube-converted/pHI2OeUdMaw.mp4/pHI2OeUdMaw.mp4 689 परवलय (Parabola)