https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:conic-sections-ncert-new/xea4762213f311c5e:sections-of-a-cone/v/introduction-to-conic-sections 2021-05-28T04:27:51Z शंकु परिच्छेद (Conic sections) से परिचय Sal introduces the four conic sections and shows how they are derived by intersecting planes with cones in certain ways. Sal Khan video https://cdn.kastatic.org/googleusercontent/RPWgYvDzMuiAzmQiOD9YRcWvZHF0dwBjlAHDhulF1J_WJKAg_F2Y44b_iZC_03pWPmyEhYAqttYl3kM1qUcvhoLh शंकु परिच्छेद (Conic sections) से परिचय Sal introduces the four conic sections and shows how they are derived by intersecting planes with cones in certain ways. https://cdn.kastatic.org/ka-youtube-converted/ikzoI7K5q3o.mp4/ikzoI7K5q3o.mp4 658 शंकु परिच्छेद (Conic Sections) https://hi.khanacademy.org/math/class-12-bridge/x09646558c1ff0797:coordinate-geometry/x09646558c1ff0797:circle/v/writing-standard-equation-of-circle 2025-01-07T14:22:35.748578099Z एक वृत्त का मानक समीकरण लिखना (Writing standard equation of a circle) Given a circle on the coordinate plane, Sal finds its standard equation, which is an equation in the form (x-a)²+(y-b)²=r². video https://cdn.kastatic.org/ka_thumbnails_cache/e02a9a45-7965-4d42-be70-a6f4d2bd2c79_1280_720_base.png एक वृत्त का मानक समीकरण लिखना (Writing standard equation of a circle) Given a circle on the coordinate plane, Sal finds its standard equation, which is an equation in the form (x-a)²+(y-b)²=r². https://cdn.kastatic.org/ka-youtube-converted/1wNUN5qIyds.mp4/1wNUN5qIyds.mp4 340 शंकु परिच्छेद (Conic Sections) https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:conic-sections-ncert-new/xea4762213f311c5e:circle/v/completing-the-square-to-write-equation-in-standard-form-of-a-circle 2021-03-07T08:22:24Z एक वृत्त के विस्तारित समीकरण से इसकी विशेषताएं (Features of a circle from its expanded equation) Sal finds the center and the radius of a circle whose equation is x^2+y^2+4x-4y-17=0, and then he graphs the circle. Sal Khan video https://cdn.kastatic.org/googleusercontent/Oembzj1tMOVAtpDcNkuVVwyscF4ptsiqRKaW9ns45uBsAFn-r5-Trm7evKb0P-TRqRrjiFNGW55uKvQm5Rlzh049 एक वृत्त के विस्तारित समीकरण से इसकी विशेषताएं (Features of a circle from its expanded equation) Sal finds the center and the radius of a circle whose equation is x^2+y^2+4x-4y-17=0, and then he graphs the circle. https://cdn.kastatic.org/ka-youtube-converted/9zKRpJ-Ajeg.mp4/9zKRpJ-Ajeg.mp4 260 शंकु परिच्छेद (Conic Sections) 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 शंकु परिच्छेद (Conic Sections) 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 शंकु परिच्छेद (Conic Sections) https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:conic-sections-ncert-new/xea4762213f311c5e: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 शंकु परिच्छेद (Conic Sections) https://hi.khanacademy.org/math/class-12-bridge/x09646558c1ff0797:coordinate-geometry/x09646558c1ff0797:ellipse/v/conic-sections-intro-to-ellipses 2025-08-25T11:24:03.031669987Z दीर्घ वृत्त (ellipse) से परिचय Learn all about ellipses in this video. The standard form for an ellipse centered at the origin is x²/a² + y²/b² = 1. The semi-major axis is the longest radius and the semi-minor axis is the shortest radius. The video also explains how to shift an ellipse. Sal Khan video https://cdn.kastatic.org/googleusercontent/D5XS31KtD3HUL7SHsmzd_JIMx34-i0GpaT_aO8lkQ9ZJ-xQh8o_aqjYRbOoOi1pxn3PrusQB7Bl6CSkBWjBjmBHT दीर्घ वृत्त (ellipse) से परिचय Learn all about ellipses in this video. The standard form for an ellipse centered at the origin is x²/a² + y²/b² = 1. The semi-major axis is the longest radius and the semi-minor axis is the shortest radius. The video also explains how to shift an ellipse. https://cdn.kastatic.org/ka-youtube-converted/Auv-yHdjA6Q.mp4/Auv-yHdjA6Q.mp4 854 शंकु परिच्छेद (Conic Sections) https://hi.khanacademy.org/math/class-12-bridge/x09646558c1ff0797:coordinate-geometry/x09646558c1ff0797:ellipse/v/foci-of-an-ellipse 2021-03-25T01:54:36Z एक दीर्घवृत्त के समीकरण से उसकी नाभियाँ Sal explains how the radii and the foci of an ellipse relate to each other, and how we can use this relationship in order to find the foci from the equation of an ellipse. Sal Khan video https://cdn.kastatic.org/googleusercontent/Yz3g-FK-xyNlN0n9dnHPMLLICOGJjZ5vDhj2O6XmMgEDGMPOCwhfkz3GQlfRXITSUoq5mMNqlfllza9EQyRdjwGANA एक दीर्घवृत्त के समीकरण से उसकी नाभियाँ Sal explains how the radii and the foci of an ellipse relate to each other, and how we can use this relationship in order to find the foci from the equation of an ellipse. https://cdn.kastatic.org/ka-youtube-converted/Roc8a5xq6Gc.mp4/Roc8a5xq6Gc.mp4 829 शंकु परिच्छेद (Conic Sections) https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:conic-sections-ncert-new/xea4762213f311c5e:hyperbola/v/conic-sections-intro-to-hyperbolas 2021-03-25T01:54:36Z अतिपरवलय (hyperbola) से परिचय Sal introduces the standard equation for hyperbolas, and how it can be used in order to determine the direction of the hyperbola and its vertices. Sal Khan video https://cdn.kastatic.org/googleusercontent/K7U1uh1j_MEI_Mc2X2xyfTTawjdJyVbxFn2XFN_np1nCX-ly_ohMlRgH-rScJ2tOKC-gLmyJHvByWl_Ri6Mt6Tyl अतिपरवलय (hyperbola) से परिचय Sal introduces the standard equation for hyperbolas, and how it can be used in order to determine the direction of the hyperbola and its vertices. https://cdn.kastatic.org/ka-youtube-converted/9DmQpne_eg0.mp4/9DmQpne_eg0.mp4 814 शंकु परिच्छेद (Conic Sections) https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:conic-sections-ncert-new/xea4762213f311c5e:hyperbola/v/conic-sections-hyperbolas-3 2024-11-05T09:17:20.455220517Z ऐसे अतिपरवलय (Hyperbolas) का समीकरण, जिसका केंद्र मूल बिंदु (origin) पर नहीं है Sal analyzes the hyperbola whose equation is (x-1)^2/16-(y+1)^2/4=1, and graphs it. Sal Khan video https://cdn.kastatic.org/googleusercontent/VFpEIZ1XOiIzH_CEkT2hwpLXC2jmCAKFh4IpbsPQACXWlv0mWZezY3T-HRV9cFiYwAsZBwwUraAPZQdPIJ9UUlAt ऐसे अतिपरवलय (Hyperbolas) का समीकरण, जिसका केंद्र मूल बिंदु (origin) पर नहीं है Sal analyzes the hyperbola whose equation is (x-1)^2/16-(y+1)^2/4=1, and graphs it. https://cdn.kastatic.org/ka-youtube-converted/6Zn8uionEdI.mp4/6Zn8uionEdI.mp4 629 शंकु परिच्छेद (Conic Sections) https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:conic-sections-ncert-new/xea4762213f311c5e:hyperbola/v/foci-of-a-hyperbola 2021-03-25T01:54:36Z समीकरण से किसी अतिपरवलय की नाभियाँ (Foci of a hyperbola from equation) Sal discusses the foci of hyperbolas and shows how they relate to hyperbola equations. Sal Khan video https://cdn.kastatic.org/googleusercontent/fN5xNEwDo7pABBo-PQVKZcs8fLgu9rFMFTSrHmvDyAHXKycHCAM8e5YS5-tCZmXF6JtwrXfVQ8WaMIHLa9rtgoo समीकरण से किसी अतिपरवलय की नाभियाँ (Foci of a hyperbola from equation) Sal discusses the foci of hyperbolas and shows how they relate to hyperbola equations. https://cdn.kastatic.org/ka-youtube-converted/P3K6dHYZfTw.mp4/P3K6dHYZfTw.mp4 924 शंकु परिच्छेद (Conic Sections)